I am thinking about trying these arrows this year. I shoot 67 pounds, have a 29 inch draw, and use a string loop. I will use 100 grain muzzy's. I will be shooting these arrows out of a hoyt x-tec, and a mathews as well. What size shaft do I need to use? Does any one know what these arrows will weigh cut to 30 inches, and fletched with 3, 4 inch duravanes? Also, I talked to a guy yesterday at a 3d shoot who said he was using these shafts fletched at 4 degree helical off of a bodoodle arrow rest and was getting great flight. I have a tm style rest on both these bows, and was wondering if anyone who has shot these is getting these kind of results without using a drop away rest? Thanks, and good shootin'. Bhunter32.