As a kid we set ours up right off the 5th tee at the local muni, yep teach your kids these things
Location is key
Hole 11 (i think) at Falcon Ridge had a lake next to it and during the summertime, the north part of the lake would dry up and reveal scores of golf balls. I used to tramp around that dried up lake and pick up the balls and then wash them and then set up a stand on Hole 12 and sell them to people. Made a pretty decent penny for being 12. However, the marshall would sometimes come by and tell us to scram, but when we saw him coming, we'd pack up shop and run and hide in the woods.
Also, the south side of that lake had astonishingly good bass fishing.