You can do torque rolls on your trainer or learnd to hever on a trainer.
That's what that those turn around manuers : stall trun, tail slide are for.

partice doing those on your trainer and bascailly build off the that.

Bascailly you bump the throttle to kick the tail around for a stall turn.

You need to learnd how to do this at 2-3 mistakes high anyways.
Bacsially learnd how to recover the model when it falls or stops flying.
and learn how to set up for a hover...bascailly wake up your left hand.

In hovering...your going to be bumping the throttle for the other control surfaces.

Move the CG back and get proper props. Larger diameter less pitch

like this vedio

listen to the sound of the engine..as he's bumping the throttle


http://www.youtube.com/watch?v=7hUBW99jGr4

Get a flight sim to help you with the oriantations...anyone will do.
There's models set up for torque rolls..even in the free onces