it says: to learn the hoochie glide first, the hoochie glide is easier and will help prepare you for the batwing.
"Edge outside the wake 25 to 30 feet, turn slowly, keep the line tight and cut into the wake with a medium to hard edge. At the base of the wake, start to rise, easing up off your edge and let the tension from your back arm pull you up and into the trick. Remember, because you're edging toeside, there will be a lot of tension on your back arm. As soon as you leave teh wake, immediately reach down and grab the board (indy). Just like on the Hoockie Glide, if you wait too late to grab the board and go into the Raley position, you won't have the strenght to pull the board in so that you can grab it. Once you grab the board, relax and let the boat stretch you out into the Batwing position. On the landing, pull the board and handle together. This should bring the tip of the board up and back level with the water for a successful landing." Wake Physics
Hope this helps.