Let's discuss this then. I move the seat around until I feel real comfortable pedaling, but can also get behind the seat without difficulty. I've never run a setback post, don't need to. But I've seen alot of guys that have the seat jammed all the way back. IMO they would be better off with a setback post as it would allow them to mount the seat in the middle of the rails, which is probably less stressful on the seat. But I also know pretty well how my body likes to be on the bike. I've set up a few bikes and took a quick guess on seat position and nailed it, never had to move it fore/aft or change the height. Maybe for newer riders getting a fit done would be a better idea? But then what principle do you follow for seat position, KOPS or make your own up like I did?