If he fishes the pond now, I have put a price on all the fish, so he will weigh/measure/write down the info on each fish. I pay $0.50/lb for that information, and have a $2/lb bounty on all the LMB that he can remove. He now has an incentive to gather that info.
I furnished a digital scale like they use on the MLF show, and I have a write in the rain spiral bound notebook that I have labeled with all the fish species in the pond. I made columns for date, length, weight, and whether kept or released. Any fish that is bleeding is to be removed.
I keep all that stuff in a tote where he can access it even if I am not home.
