Tumbling Waters is easy to find. We took the kids there on a misty afternoon. The man who helped us was named Joe (I think). He was super nice. Fishing is free but you must keep what you catch and then pay $4 per pound. Not bad. They provide gear and bait.
The kids bait there hooks with canned corn and just drop the line in. With in a few seconds YES Seconds! They have a fish on the line. There are tools there to help you get the hooks out. On average they were between10-12 inches.
Between the two of them we caught 10lb of fish in an hour. When our first bucket got full we just gave it to Joe and he asked how you want it dressed. Filet, gutted with the head on or off.
The campground it self was pretty and the bathrooms are very nice for a campground.
If you are in the area skip the $40 bucket of rocks at the gem mines and go fishing instead. You will be glad you did!