There's a vacant lot just south of Rocky where you can launch. There's another vacant lot south of Little Rocky where you can also get out in your tube. Easy spot in the spring, a bit of a hassle in the fall. Nice public ramps at Nice & Lucerne with good fishing nearby. Rodman is an easy take-off spot, and State & County Parks are also good launch sites. You might also be able to put your tube in at Skylark if you want to fish Berger Bay - not sure if Skylark would charge you any $. The 6th street launch ramps are also easy, although I don't know how the fishing is nearby. Good luck.