I would think weight on a certified scale should be manditory along with a good close up of the fish with a tape measure beside it or on a measuring board. Getting a certified weight is a pain, but scales vary so much it would only be fair. Grocery stores have certified scales.
Probably a form to be filled out and signed by a witness or employee where the certified scale is at.
If Bruce shows us a bluegill pic with canine teeth I will be suspicious!
I would definitely separate hybrid bluegills from regular bluegills. Probably coppernose from others as well.