When I started foiling swapped hat for helmet.. I joked at the time I would give up 4 day after 30 crash es at 30+ kmph because punch drunk.. I have not been hit by board or foil so to avoid repeat heavy whacks.. Just hitting water nearly always head first.
Tried old footiekit soft padded head gear lower profile less concussion..
Still getting bronco'ed so.
Buying new .. Still feels too risky going with out as not skilled enough.
Learning curve stalled qld winter wind drought but just picked up Peak4 from drsurf so sub10knts should be safer

Cheers
AP