Shortarse
I find the oppersite that I get an almost shin splint effect because my feet are at an uncomfy angle for long periods even with the seat right back. Its even worse instructing trying to keep them away from the pedals. My knees are up and have to to be spread to get full movement of the controls in roll thus encroatching onto the other side.
The tommy on the other hand I can't reach the pedals with the seat right back, my shoulders don't touch the students however big they are, and my knees are well out of the way.