I am, meaning just as bad on both sides
On a surfboard I am regular, but on a kite waveboard or windsurfing I ride both sides equally bad, maybe even my non natural side a bit better at least more elegant, as we got more wave spots on this side here (same side as Capetown) so you get better at your "weak" side, and eventually it becomes your good side
Hydrofoiling when learning new things I am better on one side for a long time till learned, but not a.clear pattern which side so would say it does not matter much.
Definitely not symmetrical no, but try to work more on the weak sides, so a lot of work ha haa
PF