IA regs just state that sites that project a light beam, including laser sights are not allowed. Some states' wording have any lighted hunting aid proclaimed illegal. for the taking of game.It is in the wording and these laws are written to prevent poaching. They were also written before lighted arrow nocks were invented. Highly doubtful that a hunter would be ticketed for using them, but you never know.I have never heard of DNR guys checking peoples' nocks. This is something for you to address with your local state bowhunters association.