Not trying to knock any ones product, but I know that by the time you set your laser up, I have already had the bow shooting. I think if you check with most pro shops across the country, you may see them laying on the bench, not being used. For the individual that has money to spend, maybe. I also know that the pros do not use a laser to tune their bow. Some might? but the most do not. And although your unit might be better than all the rest out there. The damage is done, and the tool "laser" is a useless gizmo! JMHO