FWIW- I find that the trim and how speed affects it -is the same on either shape airfoil
Why?
It's all about built in angle of attack
The 2412 or Clark Y, etc flies ok -but it is a draggy setup- It is a low speed design-always was
Build a flat foamie - with big ailerons and set it up so that you can rig ailerons to trail slightly up or down -
see what happens
Speed will affect trim on either setup