Hi Don,
It's just like a real plane, you wouldn't get in a real plane without instruction. I've been instructing in RC for 50 years and the easiest and toughest people to teach are full scale pilots. They either pick it up right away or they think they can. The worst I ever taught was a 747 Captain who showed up at the model field with a new plane. We hadn't seen him before so we asked if he needed help. He quickly announced that the was 747 pilot and could handle flying a model. The take off was fine but then when he turned back toward himself he got disoriented and spun it into a cotton field. Fortunately it wasn't hurt bad. He humbly accepted help and we got him flying solo after a couple dozen flights.
So, don't try this at home!!!