That's very true. So what you have to do post PPL is to teach yourself slowly. The problem is made worse by the fact that many self fly hire operators will reputedly not allow hirers to land off airfields, so they never get the chance to learn and practice. Of course, if you can afford it you just buy a helicopter yourself and do whatever you want. My "confined area" during PPL training was the top surface" of an old WW2 pillbox. Not very confined perhaps, but it didn't half concentrate the mind to have to land on the thing.