I too trim at full throttle. I use pattern and IMAC trim charts for doing all the fine tune stuff. I think if you look on the AMA site there may be trim charts there. The trim charts are for in flight trimming, very simple things like nosing over the plane and letting the sticks go, watch what the plane does, if it trys to pull up towards the canopy it shows nose heavy, if it tucks in towards the LG it is tail heavy. These are done after in flight radio trimming for straight and level. Lot of good info in these charts. They also give you the fix to the problems.