Gotcha. I wish I had a bigger bum, it might make sticking it to things easier xD And I have no padding so my seat bones take a beating when I make mistakes. Rising to the trot coincided with a low-hanging branch at the weekend and I banged myself pretty hard on the saddle xD
I get moments when it all just works, and then the moment's gone and I'm bouncing about crazily again. My instructor promises it comes with practice, and I believe her, but I can't wait to get there. One thing she does which I like is after every round of what we're doing, she asks me about it so I'm really aware of the progress I'm making and how things feel and so on. It's great for your confidence.
If you believe everything you read, better not read.