Offer your son five bucks if hell eat a worm.
Learn to skip flat stones (but do it away from your fishing area so you dont scare the fish).
Eat a real snack (stay out of the bait).
Instead of only skipping flat stones, throw them high into the air (but not straight up); they make a cool thoop kind of sound when they hit the water.
See how many different types of birds you can identify.
See how many jokes you can remember.
Start a driftwood collection.
Eat some grapes.
Find shapes in the clouds.
Tell the same joke over and over.
Ask the kids if they want to hear your special fish call and then yell Here Fishy, Fishy, Fishy. Do that every time you go fishing.
Play Rock, Paper, Scissors and keep score. http://www.worldrps.com/
Act like a game show host and ask a series of silly questions to each of the contestants nearby.
Read aloud.
Give a devotional.
Grill hamburgers and call them "hamboogers."
Wave to passersby.
If you hook a fish and it gets away, tell everyone it was a long-distance release and you meant to do it.