A guard is ONE of the easiest positions to slow build. You start off training strength. When strength plus available skill points = 48 or more, you plow all the points into strength. Then you start training blocking while applying all SP to strength. You keep doing this until strength is AT LEAST 68. (Some advocate going to 72 or more. I don't, but that's a different argument.) Then start applying SP to blocking and switch to intense training two other skills. Keep going until blocking reaches 68 (72?). Holding on to 80 SP misses the entire point of slow building.
You did what the owner said, but obviously you don't understand WHY. Do you do everything someone else tells you to do. I think the owner's plan was to make your player suck.