So I hadnt considered a fat arrow until I read a couple of replies to my post asking about ACCs etc.. I'm in an experimental mood so I'd like to try something new. I'm thinking of fatboy 500s, with 100gr points and 2" blazers since I already have some of those. That would give me the right spine at 52lbs and an FOC of 10%. I wont have the option of raising my draw weight with those though. With 400s I could raise my draw weight to 58 like I was planning on doing, but then they would be overspined. I'm also thinking about the GT X-cutters but those seem sooo overspined, but since theres not much I can do about the spine with those, I could play with the FOC. So what do you look for in the large diamater arrow department? Does the spine matter at all or do you just want to cut as many Xs as possible cause of the big arrow?