I will try to explain it: put your back foot in the 360 flip
Pocket of your tail, but not as much on the side of the tail as if you would do a 360 flip. Your front foot should be positioned as you would be doing a kickflip. Before you pop build up some pressure between front foot and back foot by pressing down at the Same time. When you “flip“ your Board while thinking hardflip with a lot of pressure, while you are in the air do a body varial and catch the board.
Actually just watch Chad Thomas or Muska to get an idea.
And remember: Conquer your board, don‘t let your board conquer you!
There is a good one @2:28