Friday's lesson was with Harley on a long line. As we got started, I asked if I was sitting deep enough in the saddle, and M said that I was. And I pretty much continued to do so the rest of the lesson. So it seems that my problem is with Blondie more than anything else.
M said that she and D are trying to work out the best plan for me to overcome my difficulty with the horse. D thinks I ride better if they just toss me up and he rattles everyone's cage. M wants to go back a work on some basics. She thinks that if they warm Blondie up, I won't have such a hard time with her.