I have been using them for three years now and love them. U can easily see where your arrow hits and if u made a good shot or not. I missed a bigg one last week and saw my tracer for an arrow go right over his back....
I just picked one up myself after hearing Mo's story from two weeks ago in Taylor. He had a hard time finding his bloodless broken arrow and didn't know if he hit the buck or not. It's the bow string moving forward that turns them on right?
Just make sure that they are legal in your state. Here in oregon we are not allowed to have anything electronic on our bows. Which includes luminocs as well as sight lights.