I don't know if you can pin it all on buck fever david. What if you're not comfortable at estimating ranges?? I can see how people want to use 1 pin and take the guess work out of it. Some people just have a tough time estimating range. I've second guessed myself about yardage more than once and I've seen plenty of bucks come in my wheelhouse in my time as I'm sure you have. And I'll tell you I'm well over buck fever!!
I can relate to the single pin although I don't use it now. It's kinda like a "tweener" in golf. 148 to the pin. Hit a hard 9 and draw it in?? It may get caught up in the wine if I don't flush it, maybe I should hit a soft 8 and cut it into the wind??? hmmmmmmmmmmmm stuck in the middle. And that's when you usually make an unforced error.