Saffer said..
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Why wouldn't wakeboarding helmets work? They have the same issues with landing in water at high speed?
In my opinion they're too heavy and too bucket shaped. I don't know what the design criteria is for a wakeboard helmet. Perhaps they're designed for going over sliders where the most likely injury is impacting the slider. I would have thought a helmet would be not much use at all if you're just riding around on a wakeboard and doing hops off the wake. There's nothing hard to hit.
That's the thing about helmet design. They are designed for surviving the most likely type of incident. Motorcycle helmets are heavy and can contribute to neck injuries. That's why neck braces are becoming more common. The helmets are designed for the highly likely accident where you head butt a tree or the side of a car.
My worst ever crash was with a Protec Ace Wake when I was teaching myself back roll kite loops. I thought I would be a good little kiteboarder and wear a helmet so I could go for it. The whiplash and subsequent bucketing nearly tore my head off. The adjustment strap veritably exploded and the helmet was rammed down over my face.
I accept that a helmet would save me if my board hit me in the head, but that's never happened.
I believe that a helmet would make whiplash injuries much worse, and they happen all the time.
I suspect a helmet will do not much good at all if I head butt a sea wall or a sign, but I always ride with two lines lengths clearance from downwind obstacles to reduce the risk.
PS The watersports standard is based on kayaking. The tests simulate knocking your head in a glancing blow, similar to hitting your head on a rock as you go down a rapid. A closer approximation to kiteboarding would be going over a waterfall and skipping of hard stuff on the way down. They don't test for that.