He surely doesn't need such an over-dimensioned brake on his motorcycle because he obviously has an https://en.wikipedia.org/wiki/Air_brake_(aeronautics) .

And this effect with rain freezing in your hair through local temperature drops i also experienced. I'm a geodetic. So when i got a contract i spend a lot of time under sometimes very harsh conditions outside standing 8-12 hours.

If you need to wear a helmet and its winter or autumn i'd definitely suggest medium-length hair more than wearing a cap under the helmet. Under a cap i tend to sweat more. Natural hair is way better in isolating your head against cold without making you sweat. His length i regard as rather impractical because he surely has to comb them a rather long time after waking up.

But props for the world record. Because we gotta wear a helmet this nice photo of him on the motorcycle wouldn't be legal in my country.