Eminenz2, I've heard Friesians are great and have so much presence. I know what you mean about the heaviness. Actually, my guy was so behind the bit for a while, guess I taught him that when I rode western. Too much of that "soft feel" stuff. It's taken me a few years but I can get him connected up pretty quickly now and he can stretch down pretty well. When he's connected, a lot of the bounce goes out of the trot and I can stay with him pretty well. I'm anxious to see how he goes with my increased strength and stability in the abs and back. I've learned that the less I do, the better he goes. Used to ride pretty aggressively, spurs, lots of leg, etc. and he'd get more and more behind my leg. I finally took off the spurs and just asked lighter. Guess he was just protecting himself. Now, the power comes from the slightest tightening (not every time), but much more consistently. And talk about a happy horse, can you blame him?
I do need to ride him more times per week, but found bicycling about 5 years ago and split my time between those 2 types of riding. My dressage instructor wishes I didn't cycle so much. Can't help it, life's too short not to enjoy a few things.
Sitting trot, have fun with it

. A couple years ago, I started having major pain in the stomach/chest area when I did sitting trot. Incapacitating. Thought I was having a heart attack. Happened about 4 or 5 times, each time when I'd been doing some sitting trot in the arena. Turned out it was my gall bladder. Had it taken out and no more episodes of pain!
Good luck on Training 3 and 4.
Jeanette