The simple answer is yes, they are harder to see. But some guys don't seem to have trouble with it. If it has some color it helps alot. As far as the F 100, it would depend on the size, power, etc. The bigger ones like the BVM seem to like some speed. Keeping it under 100mph except for landing or slow dirty pass would not be fun. There are several nice 100 kits out there. Do a few searches and see what comes up.