I remember my uncle talking about when he flew his experimental plane how he could 'slip' it into just about any size field. I've heard of 'slipping' when final is extremely short..... my understanding is, slipping is essentially bleeding off speed very quickly in order to land.... but how?

I once watched a video of a STOL wing Avid Flyer experimental plane 'slipping it in' and it looked to me like he was basically at a 20-30 degree angle to the runway (similar to a crosswind landing, using rudder to steer straight) but he kept dipping his wing and then leveling them, kinda like a leaf falling from a tree, and then he landed at almost taxi speed. Unfortunately, the only angle they showed him doing this at, was head on, so that's all I got to see.

Is there a way/reason/purpose to doing this in a model? For instance, if I were to have a Cessna, or J-3 or something like that, and I was flying as realistically scale-like as possible, is this something that could be done with an RC plane (I would assume yes) and how would you do it? Like, what are the exact manuevers?