To add to the stew--
setting up the correct thrust -is really posible ONLY for one specific condition - -The precise amount needed, shifts -dramatically with speed - loss of speed during maneuvering and AOA of the prop disc- (shimmed up -or shimmed down relative to actual path of the model)
Theory says there is a twisted stream of air - OK so be it -
If the model has extremely low wing loading and enough power to maintain a constant speed -regardless of attitude -- then the trim never changes and the amount of thrust offset needed does not change - - No I did not forget about gravity -
Our old pattern designs ran on inertia -and in a climb -especially vertical - they bled speed and typically yawed and tucked .
setting in more right thrust -and depending on CG and the engine placement in the design-a little up/down thrust -- a lot of the need for rudder correction and elevater correction was diminished.
On my latest overpowered design - with extremely low wing loading - I have flown quite a few prop types - 8-12 " pitch - 18-22" dia 2 and three bladed - to see what happens -
Bottom line - the slower setups need more thrust corrention - I did not change the engine thrust - which is a degree right - -just noted rudder trims required.