Oh mate dont worry about it! I convinced myself that it was impossible to:
Let go of brake, pedal, jump, rewind pedals, brake, land
Thats the basic method and its a lot to think about. So dont think about doing it :(
I found learning two things helped alot:
1) Back wheel control. Do an endo then as your back end goes down, transfer to the back wheel and just get used to the idea of being on the back wheel. Nothing fancy just an idea :D
2) trackstand, then let go of back brake, put in a pedal stroke, then brake again. This sort of gets you mind going to the technique you have to use to later inco-operate the jump :P . When you think you've got this, put multiple pedal kicks into it with braking inbetween. And then finally try putting the jump in
Voila! Gappage (Y)
Hope this helps, my wrist hurts now