im pretty sure hes adding more pieces once he sets up rail and lip on, with a few more pieces to round out the bottom a bit so you don't g out would make it real good
I was planning to sink the legs down into the snow. Also I used corner braces to attach the ramp to the tower. I made it so the piece of wood that the ramp hooks onto can be moved down to decrease the slope. Basically this is as steep as it can go but it is simple to decrease the slope.