RE: Broadhead ?????
Some diapers become camo while in use........ Whatever blade you use, I would look for an open truss like design to reduce planing. Thats what made me choose what I did.
Though not a coc, I have seen absolute devistation with the shuttle t's on many occasions. They fly good at higher speeds also...
Good luck in your quest. If you have any questions on the software, feel free to give me a shout