Whats a correct way lets say approaching a rail? Not the rails going downhill i'm not that advanced yet, but lets say one where the snow is flat and the rail is flat. I can hit a 50-50 easily, but that's like girly. I want a nice clean frontside boardslide.
So what's the best way to approach a rail and be stiff throughout the whole grind?
same goes for boxes. Sometimes I find myself eating it, because I wasn't balanced properly.
For frontside boardslides, your approach line depends on where you want to be landing on the rail (which part of the board do you want to be over the rail) and also what variation you're doing of a frontside boardslide.
Are you going front board to regular or front board to switch landing?
For front board to regular you're typically wanting to land with the rail under your front binding, so you'd be approaching a tiny bit to the left of the box (assuming you're regular footed) so that when you rotate 90 degrees you'd be landing with the rail/box under your front binding as oppose to the middle of your snowboard.
If you wanted to land with the rail in the middle of your snowboard during a boardslide on a ride on box, you'd just approach exactly the same as a 50/50, lined up with the end of the box and making sure your line is straight, directly in front of the box.
As far as balance goes, 99% of the time people fall on frontside boardslides because they aren't keeping their board flat against the box or not taking enough speed into the rail/box.
Honestly if you can get a video we can tell you what's going wrong, but otherwise all of us are just guessing.