i feel like alot of pro's make it in their late teens and early 20's people "turning pro" when they are like 18-24 seems pretty normal. and the ones that turn pro later are usually better/cooler skiers. all the super young pro's that are under 18 are usually just the typical over techy generic style type pro's that are no fun to watch.
adam delorme is like 28 maybe even 29 now, probably the best overall park skier out there, unless all you care about is doubles. and he only became well known a couple years ago.
and yeah turpin was like 20-21 when he STARTED skiing, and he's one of the best overall skiers out there. and one of the most innovative.
i think abma and pollard were in their mid 20's when they made it.
seth morrison is like 35 maybe older and he kills it harder now than ever.
jp's gotta be in his mid 30's atleast and he just made one of the best segments of all time in revolver.
soooo yeah the 25+ year old pro's are the coolest. it seems like the closer they get to 30 the more awesome their skiing gets.