We have the advantage that water does give a bit unlike ground, grass fields, head on impacts, etc of other sports however the speed probably more than makes up for it. I personnaly have had concussions playing other sports and have rung my bell more than a few times from skiing.I would agree that concussions are overlooked espesially by those who have never experienced one, but once you have you know it when it happens again.I have ski partners that now ski with helmets because of their concussion knowledge coming from partaking in other sports.