RE: Slowing your hunting arrow down?
My arrow flys at 223FPS and I can consistantly hit a 4" circle at 45 yds. My max hunting range is 25 yds but I would use the same arrow at 45 yds and quite possibly even farther if I ever needed to hunt at those ranges. I never understood the need for a flat trajectory if you can hit your spot, regardless of range. I'll take my slow, heavy, high FOCarrow and stack its performance against any fast, light, low FOCarrow at any range.
Kudos to you, GMMAT, for being willing to look at other options to improve the performance of your hunting setup instead of just saying, "...it's good enough, it kills deer....". It may kill deer but it isn't performing up to the level you expect and that is what we need to have confidence in our setups.