Your technique feels solid but your times aren't? Learn to read your own SUP video like a coach — spot pulling air and arm paddling, then fix them.
You're paddling fast, it feels strong — but your times say otherwise? Here's the honest answer: what feels right on the water is often still inefficient at pro level. Your feel isn't lying to you on purpose, but it's lying. The one thing that never lies is the camera.
A catch that starts too early, not enough core rotation, a release too far back — none of that is visible in real time. In slow motion, it is. This guide shows you how to read your own footage like a coach: spotting, understanding, and fixing errors like "pulling air" or "arm paddling."
You need two perspectives: side view and front view. Your partner films at water-surface level, not from above. The side view shows your reach — how far forward you plant on entry — and your pull length. The front view shows whether your paddle is truly vertical in the water and whether your board tracks straight. Don't position the camera too close — from ten to fifteen meters away you capture the whole movement without distorting the perspective. A boat or a bridge works well for the front view, filming you head-on as you paddle toward the lens.
Stop the video exactly at the frame where your pull begins. Is the blade not fully submerged yet? Then you're pulling through air — that costs you propulsion without you feeling it. If you hear splashing instead of silence, you're pulling too early.
Your knees stay evenly, slightly bent through the whole pull, your upper body only tilts forward a little. The classic error: arm paddling — the arms bend too early instead of acting as rigid levers. If the power comes from your arms instead of core rotation, your shoulders fatigue long before your legs do. Here's a good comparison: rowing with just your wrist on a short stick feels like real effort in the moment — but barely moves you. Arm paddling is just as inefficient, even though it feels like you're working hard.
Let the video run to the end of the stroke. The exit needs to happen fast, roughly at foot level. Pull further back than that and you lift the water — that pushes your tail down and brakes you like a handbrake mid-roll. During recovery, guide the blade flat and calm back over the water.
Don't fixate blindly on the camera or drone while filming. Follow collision-avoidance rules and keep other water users in view. A focused sprint for the camera makes it easy to tune out your surroundings — safety comes before perfection.
The ghost-overlay method. Tools like Coach's Eye or Kinovea let you transparently layer two videos. Overlay footage of an elite paddler onto your own — in the DOMISPORTS curriculum we often use footage of Ole Schwarz for this. In direct comparison, you'll see down to the millisecond whether your hips rotate too late or your reach is too short.
Every four to six weeks is plenty for most paddlers. Checking more often doesn't help much, since new movement patterns need time to set. Use the time between checks to work on the single flaw your last video revealed.
Yes, modern smartphones film easily at 60 or even 120 frames per second — plenty for clean slow motion. A stable tripod and the right filming angle at water-surface level matter more than the camera itself.
You start the pull before the paddle blade is fully underwater. That means you're partly pulling through air instead of water, which costs propulsion without you noticing in the moment. On video you'll spot it as visible bubbles or splashing right as the pull begins.
That's the classic sign of arm paddling — the power comes from your arms instead of core rotation. The small deltoid muscles in your shoulder tire much faster than the big muscle groups in your core. Video shows you instantly whether your hips are actually working during the pull.
Yes, definitely — it reveals things the side view hides, like whether your paddle sits slightly angled instead of vertical during the pull. Plan for both perspectives in a full analysis, even if that means a second pass on the water.