Any tips on this trick?
I just learned this trick. :) If you can do stuntplane flips its basicly the same thing.. just practice down spikes a lot. That will help with the motion of this trick. Otherwise just go for it, and try your hardest to spot the hole. Then its just like a down spike. :)
You don't really need to down-spike at all if you twist your arm the same way you do a base cup in ken grip. The turn is just a flick of your wrist and you'll need to bend your knees a bit more for the catch.