Great topic starter!
I certainly enjoy the romantic parts
of sailing, can appreciate time on the hook, a sunset, the fish
But I know what gets me into my hobbies are the technical challenges - flying, flying gliders, sailing, dirt bikes, sky diving
Maybe that's why I have done the hobbies you suggest, roller skating, ice skating, skiing and water skiing but I never got hooked, maybe because I didn't see them as a problem to solve but rather a skill to master?
Luge and ice boats might be cool - lot's of technical there. If I ever get assigned to a desert or frozen wasteland I might take up land yachting or ice-boating. But I am actively trying to avoid either location...