In general... back yards are really too small for flying. You really need a small park for the "back yard" airplanes.

There are a few that you can keep in a 20X 20 area, but most that can stay in that small a space can't handle ANY wind, and are best off flown indoors. Finding an indoor site can be interesting... If you are single you probably don't have a place large enough. If you are married, your "better half" will often get upset by being buzzed in the kitchen. If you are a kid... Mom is NOT going to like you flying it in the living room.