I had a friend in KY that sold custom gadgets for Bow's, sighting, trigger release, etc. He would go to shows and put 5 out of 5 arrows in a beer can at a range I couldnt have done with open sites on a rifle, people snatched those things up but what they didnt know is he could do the same thing without any gizmos. I think LED's are a lot like that and some of the growers that have the top shelf lights could probably do just as well with really strong flashlight. lol