Originally Posted by NakedlyFamous
Wow - It's crazy I rode the last two seasons without knowing you should align the high backs with the edge of the board.
It's not necessarily a MUST. Depends on the high back stiffness which turns into responsiveness. I used to do it until it was uncomfortable and I started buying bindings with high backs with a decent amount of flex. When I'd adjust them, the inside edge of my right high back used to dig into my right calf. So I stopped doing it and relied more on forward lean for increased responsiveness if I needed it.