The ollie to fakie and its cousin, the fakie ollie, are both fundamental maneuvers that can become the basis for more complex tricks.
The ollie to fakie is simply an ollie on transition. You will roll straight up the tranny, ollie, and then land and roll back down backward. There is nothing complex about it. If your flat-ground ollies are good, you should be able to get some pretty high ollie to fakies in an afternoon of practice. The best technique for learning big ollies on transition is to start small and dial in your balance first and then progressively take them larger and higher.
1. Roll up the transition at a moderate speed but well below the coping. Position your feet in a wider than ordinary ollie stance so your lead foot is closer to the nose than if you were doing an ollie on flat.
2. Pop your ollie as usual. Use your lead foot to level the board out; don’t worry about trying to scoop the board.
3. Push the board hard into the transition so that all four wheels hit at the same time.
You can warm up to bigger versions of this trick by honing your technique on the lower part of the transition. Gradually bring it higher up the wall and focus on a clean ollie that lands straight more than trying to get a lot of air. If your rock to fakies are comfortable and the ollie to fakie is coming along, you can combine them in a way that should be apparent.
If the board lands too far forward and you fall off the tail end, pop your ollie later so it happens almost when you are at a stop. Try to keep your weight higher than the board so it comes down below you rather than into the side of the transition.