I've been coaching paragliders for over 20 years, and the single most consistent observation I've made across all of that time is this: the most valuable coaching moment is not the morning briefing, not the evening debrief, and not the video analysis session. It's the word in your ear at exactly the right second, while you're still in the air, while the physical sensation is still happening in your hands and in your body. That is what radio coaching is — and it's why I run every coaching week with a radio in my pocket and one clipped to every pilot's helmet.
Why Debrief-Only Coaching Has Limits
Debrief coaching is valuable. I do it every evening, using track logs and GPS recordings to walk through what happened at each stage of the day's flight. But it has a fundamental limitation: the moment has passed. The physical experience that accompanied the decision is gone. The feeling of the thermal on your brake hand — that subtle pressure increase that told you the core was to the right — you can describe it in words at dinner, but you can't feel it anymore. And the connection between word and sensation is exactly where learning happens.
When a pilot is flying at 600 metres above the Alentejo and makes a sub-optimal thermal entry decision, the debrief that evening will identify it. But the identification arrives three to six hours after the moment, when the body has been on the ground, eaten, rested, and the physical context of the decision has been fully erased. That's a long feedback loop. Radio coaching makes it zero.
What I Actually Say on the Radio
Pilots often ask me before their first coaching week what radio coaching sounds like. The honest answer is: short, specific, and timed to the moment. I don't narrate the flight or give lectures at altitude. I say the thing that needs to be said at the exact second it needs to be said.
Here are representative examples from real coaching flights:
"Left turn — thermal on your left."
Said when I can see from my position that the pilot has flown past the left edge of a thermal they haven't detected yet. The instruction arrives before they've left the thermal airspace entirely. They turn, find the lift, start climbing. At dinner I explain what I saw from my angle. But the learning happens in the air: the turn, the sensation of the vario responding, the connection between the cue and the result.
"More speed in that sink — push the bar."
Said during a transition when the pilot is flying through a sink zone at trim speed. MacCready theory in one sentence, delivered while the pilot is actively in the sink. They push the bar, the sink section passes faster, the vario stops screaming. The lesson about speed in sink is now associated with the physical experience of doing it correctly, rather than a diagram on a whiteboard.
"Top landing window opening — set up your approach."
Said when I can see the coastal site conditions are right for a top landing — the timing that requires pre-setup before the window closes. The pilot sets up early and lands cleanly, instead of circling twice trying to work out the entry and missing the window.
"Release that brake — you're slowing the climb."
One of the most common things I say. A pilot in a thermal is unconsciously holding a small amount of inside brake through the turn — a habit that flattens the bank, reduces the centripetal force on the thermal spiral, and costs climb rate. The cue arrives while the pilot still has their hand in the position that's causing the problem. Release, feel the difference, understand why.
"Good — now feel the pressure on your right brake — that's the thermal."
Not corrective this time — confirmatory. Naming the physical sensation at the moment the pilot is feeling it. This is how sensory vocabulary gets built: the word "thermal pressure" is attached to the actual pressure in the hand, not to a description of it given later.
Why Live Cues Work: The Physical Context Window
There is a narrow window — seconds to perhaps a minute — during which a physical experience and a verbal description can be connected in a way that sticks. After that window closes, the connection becomes abstract. "You were holding inside brake" is very different as a learning prompt when you hear it while your hand is still doing the thing, versus when you hear it three hours later over dinner with a glass of wine in the other hand.
This is not a paragliding-specific observation — it applies to coaching in any sport that has a strong physical component. The most effective coaching cue is the one delivered while the body is still in the relevant position, responding to the relevant stimulus. Radio coaching delivers that cue in zero delay. Ground debrief delivers it with a delay of hours. The difference in learning retention is not small.
The Cognitive Load Reduction
A second reason radio coaching works that gets less attention: it reduces the pilot's cognitive load during flight, which frees up mental bandwidth for actually flying.
An uncoached pilot flying in new conditions carries a constant background anxiety: "Am I doing this right? Should I be higher before crossing here? Is that cloud going to OD? Should I have left that thermal sooner?" These questions consume processing capacity. The answers must be derived in real time by a pilot who may not yet have the experience base to answer them confidently.
A coached pilot on the radio still thinks — but with a trusted source available for the critical decisions, the anxiety load is dramatically lower. They can focus their full attention on the wing, the air, and the immediate situation. The radio is an expert system with context: I know the site, I know the forecast, I can see their wing, and I know their ability level. When I give a cue, the pilot doesn't need to second-guess it. They execute it and observe the result.
This is also why trust is such a critical variable in radio coaching.
Building Trust: The Week as a Learning Arc
Radio coaching works only when the pilot accepts the cue without hesitation. A pilot who hears "left turn" and spends three seconds thinking "but I thought the thermal was to the right…" has missed the moment. The trust that enables immediate response is not something I assume — it's something we build across the week, deliberately.
Day one, I give fewer and simpler cues — confirmatory more than corrective — so the pilot experiences radio instruction as supportive rather than intrusive. By day two or three, having verified through experience that my cues land them in better positions, the pilot's response time drops from seconds to tenths of seconds. By day four, experienced pilots describe the radio as "thinking out loud with a second pair of eyes" rather than receiving instructions. That's the state where maximum learning happens.
Practical Details: Radios, Range, and Frequency
Guests joining a coaching week in Sesimbra do not need to bring their own radio. I provide the radio equipment, test it before every flight, and brief the frequency each morning. The setup is a VHF walkie-talkie clipped to the shoulder strap of the harness with the earpiece run under the helmet. Voice quality at coastal Sesimbra sites is clear to approximately 1–2 km in horizontal range, and 3 km line-of-sight — which covers all soaring flights at the coastal cliff and ridge sites, and early XC transitions from the inland sites.
For longer XC flights in the Alentejo when pilots fly further than radio range, the radio coaching naturally transitions to pre-flight strategy discussion and post-flight track log debrief. But even on those days, the first 40–60 minutes of flight — the thermal training phase while still in range — are radio-coached, and the habits established carry through the rest of the flight.
I use VHF frequencies that are standard for paragliding operations in Portugal and compatible with all common receiver types. The specific frequency is shared each morning before the flight briefing.
The Evening Debrief as Complement
Radio coaching does not replace ground debrief — it changes what the debrief is for. In a radio-coached week, the evening session is not about identifying what went wrong (the radio handled that in real time). It's about understanding the context behind the cues: why that particular thermal was on the left, why that transition needed more speed, what the track log reveals about the patterns across the whole flight rather than individual moments.
Together, the two approaches cover the full learning loop: live cue for immediate physical learning, debrief for contextual understanding. One without the other is incomplete. Radio coaching without debrief leaves pilots with better reflexes but shallower understanding. Debrief without radio coaching gives intellectual knowledge without physical reinforcement. Both, in the same week, is what produces the progress that pilots on these weeks consistently describe as the fastest development they've had.
A Week of Radio Coaching vs Flying the Same Hours Alone
The difference is not about the number of hours in the air. A pilot who flies 20 hours alone develops slowly — they build some experience, develop some intuitions, make some discoveries. A pilot who flies 20 hours with live radio coaching from a coach who knows the site, knows the conditions, and knows the pilot's specific gaps arrives at the end of that time with a qualitatively different understanding and a dramatically expanded repertoire of physical habits.
I see this every single week. Pilots who arrive on Monday with a particular error pattern — holding inside brake in thermals, flying too slowly in sink, transitioning without pre-scouting landings — leave on Friday without those patterns. Not because they read about them, but because the radio caught them in the act, on multiple occasions, in the same physical conditions, until the new behaviour replaced the old one at the habit level.
That's why I believe radio coaching is the single biggest accelerator in paragliding development. And why every week I run includes it, without exception.
On the first coached flight, the radio can feel strange — an external voice in a space that has always been internal. Most pilots adapt within the first 20 minutes. By the end of day one, the radio is background infrastructure rather than a novelty. You don't need to do anything special — just fly, listen, and execute the cues. The rest builds itself.