Norm, from what I've read about your pond (I'm jealous by the way) a lot of the fishing is off your docks? I have seen hunting areas with laminated sheets and grease pencils at ingress and egress areas for recording small game harvests. I would suppose you could post them in strategic areas around your dock or other favorite fishing spots. If you wanted to get really into it, you could equip these "stations" with a tape measure (stick, ruler, etc) and a scale to highly encourage recording.
