I'm interested in finding out whether stabilizing a model rocket by making it spin is worth trying out or not, which has lead me to several questions:

1) Can anybody explain to me which forces are at work in this process?

2) How many rotations are necessary to stabilize a given rocket, and how can this be calculated in advance?

3) If the aim were to reduce drag in order to make a rocket fly higher (given the same amout of thrust, gravity and other forces we cannot influence) reducing the fin size should be one of the easiest methods. On the other hand to make a model spin, you will have to give the fins an angle of attack, which I suppose would increase drag.

Is there a point where the pay-off is worth it, that is, where the decrease of drag due to smaller fins is bigger than the increase of drag due to the angle of attack needed to make the model spin?

I hope I was able to put my thoughts into sentences that make sense

Thanks a lot!

André