Don't screw around with a forty powered glow model if you are going to fly at a park. At best you only irritate the neighbors, at worst, you kill someone.

The ONLY thing that makes sense in a park situation is electric. IF you want a "real" airplane, as opposed to a toy like a wingo/fungo/firebird, get something like a Bloody Mary or Miss Bohemia from Hobby Lobby. Properly set up, both of them will fly free flight style from a hand launch and your job is just to keep them in the general vicinity. After a few flights, you'll start to figure out how to keep it close in and at low altitude, and after that you can work on spot landings, precision flying and ROG take offs.

SPADS are great---at a regular flying field, but DO not fly a forty powered glow model of any kind at a municipal park unless it is also a designated flying site.