which is harder: doing a frontside boaardlide on a snowboard box, or doing a 50-50 and then going into a frontside boardslide?

the 2nd one

Depends if you did the 50-50 to the frontside boardslide by accident. Then comes the question if you can get off without falling. Some people will turn their upper body doing a 50-50 and end up going into almost a boardslide, around then, they fall.


Does not count if you fall.

unless you have a lot of spinning momentum, switching from 50-50 to boardslide would be harder.