I found that on My X bow I glue it to my scope, and then wrap tape around the magnet as a make sure it stays put, then I load a bolt I just turn it on, then off again and it makes me double check to see that its working as well


On my bow, I have an over draw I have it on with construction adhesive, have yet to have one come off since I did that

and my eye's ain';t as good either and why I think I like them so much as well!