Every so often when I'm practicing in my back yard I miss the target and hit my block wall, which generally ends the life of that arrow. So I've been using inexpensive Allen eliminator carbon arrow from Walmart for my target practice. I'm using a Diamond Infinite Edge set for about 65lbs of draw weight and a 27.5" draw length. The Allens are 29" arrows but seems to work well enough. I busted another leaving me with four so I went to get a couple more but picked up some 30" Carbon Express Speak Freaks instead. At $7 a piece I might as well start getting arrows from Robinson's or Bull Basin or Sportsmans Warehouse but I thought I'd spend a few extra bucks this time and give them a try. I'm thinking I should shorten them however, the 29" Allens weren't so long that I have been concerned but I think 30" arrows might be longer than I should be shooting. Should I shorten them? Should I shorten the Allens while I'm at it, I'm thinking I should trim to 28". I haven't trimmed arrows before but I think I have the right tools and can make it happen, willing to try at any rate. Any wisdom, thoughts, guidance before I try?