I have been putting some white electrical tape on my carbon arrows to mark my draw length. I did it initially to draw eyes closed to what felt right then looking to see where I was on the arrow. It also turned out to work great for a check system so I can make sure I am drawing consistent in practice. I even think my peripheral vision catches it when I am not looking specifically at it. I shoot my arrows a little longer so this has been a help. I am surprised how many times I have shot them into bags and foam and the tape is still on. A little has warn off, but it is still there. It actually rubs off more on the back pulling arrows than on the front from going into the target. Now I am thinking it would be nice to maybe put a little paint stripe on and clear over it so it lasts a lot longer. Anyone ever do that?