This is a true 3D maneuver. I won't even try to explain any other one but this and I don't even have this one down pat.

I usually enter a hover maneuver with very little forward flight and the engine just above and idle. I pull up to virtical and using airlons turn the plane so the top is facing me. When I get the plane virtical the 1st thing I have to do is find the throttle position that will hold it in place and then work the rudder to keep the plane virtical. I haven't done anything to trim this plane for this maneuver so I find that I have to play with all of my controls to keep it in one place. Because of this I rarely am able to let the plane torgue roll and when I do it is only for a few seconds. On a good day I can keep the plane is one place for several seconds before it falls out.

It helps greatly if your power-to-weight ratio is significant. This does 2 things. 1) It gives you a mid-level power range for hover and 2.) plenty of reserve power to pull out of harms way -- this gives you the warm fuzzy to keep working at the hover even if you feel its going to break. You should have this with the 1/4-scale G-202 and the OS FX 1.60. It also helps if your running a low-end prop pitch.

Practice!!!!! Practice!!!! Practice!!!! I don't see how you should have too much difficulty here if your able to do half of the other things you say you've mastered, e.g., Rolling Circle!!!! -- that's something I'll try after I've mastered more of 3D.