From an engineering standpoint, I can see pros and cons both ways. I actually pulled out a couple of my Chem E books and did a little research, but....

I figure it helps keep the grime off the hulls, so a smooth clean hull is faster than a dirty one.

But the real difference that I see depends on what part of the boat I put the wax on. If I wax the area around my or my crews feet, I tend to not do as well...I think it stems from my crew taking the stick out of my hands and beating me with it to show me his appreciation for the nice new wax job.

Will