I like to cook #8 - #10 butts. I've always had more difficulty getting good results with 4# - 6# butts. I didn't think that I was alone. So, your question caught me a bit off guard. But, I also have a drum that is pretty much set and forget. Maybe if I had a smoke that required constant feeding I would sing a different tune.
I totally agree cooking hotter is one way to speed it up. I also think trimming a pound or two off of each to grind up for sausage isn't a bad idea. (WHAT? You don't have a grinder? BANNED!
) And, I also think that passing on sales rather than loading up with more than you can handle and having stuff end up wasted rather than spending $5 - $10 more down the road is okay too. Do what makes sense to you, not us crazy zealots on the internet. We're not really real.