I just refletched 6 of my arrows with these three weeks ago. They seem to be holding up good. It was quick and very easy, as far as i can tell it did not have any negitive effect on the flight of the arrow. Just putting it out there for anyone interested
Used to hear that after a while they loosened up and would spin, have you found that to happen at all??
I used to hear that too. NAP had a bad run of them about a year and a half ago. The glue was bad and would only hold for a short time. That has long since been fixed.
I used the twister ones they fly pretty neat, you can see the arrow rotate in flight. Not sure about them coming lose, they seem to really be on tight. These sliped over the arrow then you put them in boiling water and they shrink tight to the arrow??? I assume they all work that way.
Never had an issue with mine. Love em, passed through deer and targets with no failures. I did cut one with a broadhead, so replacing that one was simple!