groundwork groundwork groundwork
He sounds buddy sour to me. Not a severe case, but still has it there. How does the mare react to him? Is she the same? My best suggestion is to take him as far as you can without any problems...the minute he shows any signs of missing her, bring him back for maybe 2 minutes, then turn around. His task is to go as far as he can without missing her...his reward is getting to go back and see her. But make sure YOU are the only asking him to turn around, not just him turning around.
Soon he'll be able to go for hours with no problem even in the beginning for he will know he will be able to see her again and that you aren't taking him away from her forever.
EDIT: Do this also for the trailor. The minute he starts getting upset load the mare back up (or bring her so he can see her) then go again...soon he'll know that she WILL come back to him.
For the pushiness, groundwork. If he invades you're space, start doing some jumping jacks. Seriously, it works. If you are leading and he gets too close, start walking backwards like you are doing the chicken dance or go backwards doing jumping jacks (I find the first easier though).
I highly recommend the Parelli 7 Games simply to get him to mind you better and be less dominant and pushy. It did a great job with my boy.
Last edited by SonnyWimps; 11-12-2008 at 10:12 AM.