This shows me at at 90 degrees.
Be able to do kickflips and bs 180s with no problems. Halfcab Kickflips help a lot with this trick. Set up like a backside 180 and set your front foot up like a kickflip. Pop the 180 and as soon as you start to spin, flip the board like a kickflip. Be sure to scoop the board with your back foot to make it do the 180. Stay above the board. When you are about to finish spinning stick your feet down and catch the board. Don't worry about catching these at a 90 degree. Worry about that when you get good at these. You should have very few problems with this trick if you can do kickflips and bs 180s off small ledges and over stuff like 2x6s consistantly.