Switched my Cal Santa Cruz team from motion to flex, and for 2 years, did 25-20, vice 20-20. Since at 20-20, a player learns his offensive and defensive sets at the same rate, it was s good chance to see what that extra 5 minutes did. A guy starting both flex and man at F gained four days over the course of both his FR and Soph seasons--and spent 28 of the 68 practice days at a higher level of flex than man, since it is cumulative. Has anyone worked out the correlation between IQ and skill points? Say, how much better is a B+ than a B, in terms of skill points? Seem to remember one vet coach said a letter grade was worth about 10 points in AT and SP--is that a whole letter grade, such as B to A? Trying to figure out whether it is best to assign more than 20 points to the sets. One veteran coach told me he doesn't use 20-20; another says he bumps up his D, but not his O.