Sorry this isn't scale, but it does kinda fit into the discussion.
This is a vid from about 2 yrs ago. I was able to do side and nose in hover and I was doing some side to side flight and some figure 8's. I decided I'd work on flying circles next. These are my first attempts; at first I kept losing it in the shadow and that dark fir tree on the right - but once I changed the location of the start of my circle (about the 2 minute mark) it got better. And with practice it got better over time.
I've moved and now I fly in the back corner of a park in a clearing between trees. Not near as much room and about all I can do is small figure 8's.
I decided today to try some slow circles in phoenix, and it's ugly. Thank goodness sim repairs are fast and free.
It appears these are skills you lose if you don't use them?