Im trying to learn a 90 degree grind on a rail anybody have any tips

I keep going off axis on my 3s but idk why

Learned how to slide boxes and rails today. Any tips for consistency when it comes to sliding to the end of rails.

This was my first ever rail slide without slipping out! Any tips on making it all the way to the end? I only got a few attempts in cause I was short on time

My mountain just opened and I did this 3 had them a lot better last year any tips. And I already realized I need more speed.