basic parameters of a park flyer...
I think I would keep anything glow to a regular flying field or away from residential parks not only for the safety but for the noise. Laws banning any type of flying models ie; rockets, control line, r/c are popping up everywhere. I would say anything gentle like a pico stick or gws tiger moth, something slow and gentle. Even though it's not a baseball to the face people still think it's different and more dangerous.