I want to try experimenting with shorter feathers this off season. Want to be use my current stocks instead of buying more than I need. I have 5ins TrueFlights, was planning to just hold them against a ruler and cutting the tip. Or is it better to cut the back? Is there a more efficient way? Cutting the front would change the streamlineness of the profile, but cutting the back would change it shape right? or is there some simple jig I can use?