Flycatch, one thing that I left out is that as you approach the sweet spot on CG your airplane will be affected by airspeed changes less. All my airplanes trim the same from 1/3 power to full power. My 33% Laser actually will trim from 1/4 power to full power. The goal is to get the CG set along with wing tail angles so that the airplane does not require any elevator trim at all. No elevator trim means that there is nothing to become more or less effective with airspeed changes. This will actually lead to the airplane being more stable in windy conditions as well.