RE: backyard flying?
A lot of the newbies think they can do it, and the park flyers as easy as they are to get are going to be crashed in the neigborhoods, but I wouldn't think about flying a nitro plane there. Many of the younger flyers do it and get lucky, but the first time there is an accident, you won't have the money to pay for it when no insurance will touch it. Better off flying at a flying field where it is set up and and there is room to fly and land. Why push it and chance someone getting hurt or killed by a plane that got away.