Last year I bought some Lumenoks and noticed that they left gorves at the back of my arrow, I wasn't to impressed. When I bought the Max. Hntr. I thought that I could shoot the lumenoks with the bulldog collar and not have the groves at the back of my arrow, well when I shoot them the light goes on but them turns off. I tried taking the bull dog collar off and it worked fine. Has anyone else notice this with these arrows? Is it possible to use the Lumenok with the bull dog collar on or not?