RE: single pin advantages and disadvantages
I shoot a single pin set at 20yds. This is sufficent to shoot to 30 yards with very little adjustment on shot placement. I find that with 3 or more pins on my bow they tend to overlap and "clutter" my view when I'm setteling in on a target. I never shoot beyond 30 yards give or take a yard or two so additional pins aren't needed. Also, I shoot enough through out the year if I had to make a longer shot I could easily adjust out to about 40 yards.
The off season is a time to play around with equipment and tinker with thing that just don't feel right. Strip off your other pins and give it a shot. I'm sure you'll like it better and if I'm wrong you'll have all summer to get those pins back on.