20 minutes of the same thing we've been working on; staying in the gait (that's not a problem, maintaining the speed of the gait is the next thing to work on) and staying on the rail.  We've upped the ante a little as today I asked for half circles to change direction (neck rein).  We also did 20M circles - not a lot, just looking for a circular circle and a happy compliance.  Balthazar tends to toss his head when turning away from the direction of the paddock where his buddies are.  In fact, we quit today when I got a very smooth, accurate, non head tossing/tail swishing circle away from them.  He does try, dear boy.  We also did a little cantering but I quit early because the wind was coming up and although he wasn't spooking why complicate things?  We've had a change come through so it's cool, dry and windy.  The three of them were bucking and farting this morning when I turned them out.  It's just that kind of weather.  At any rate, 20 minutes was enough.  The ground work, 10 minutes of it, was fine.  He's improving all the time.  We're getting a much more responsive full pass along the fence and yielding on a circle around me (like he's the hour hand and I'm the center of the clock).