training question

["guest@endurance.net" <guest@endurance.net>]

A. Perez A,mandPerez@ureach.com
  I rode my new horse, Cyclone, before work this morning.
It was my third time up on him since he came home for a two-
week trial period.  He was an idiot: he'd stand for mounting but
wanted to take off before I was completely settled, and pitched a fit when I asked him to stand - semi-reared, whirled, head-tossed etc. I nearly came off just getting mounted. He also did not want to stand to wait to cross the main road (I had to cross a heavily trafficed road, and have to wait a while for a break in traffic). When I asked him to stand he'd tos his head, prance, dance etc. We ended up going back and forth along the side of the road until a break in traffic came.  Same deal on the way back, but he kept swinging out into the roadway (into on-coming traffic) and skidding around on the pavement, so I dismounted and led him across, and the rest of the way home (not far, and I wanted him to cool out a bit).  I know part of his problem is that he's at a new place, with a new rider, and we were riding alone.  His prior owner had him on 14 % sweet-feed, a couple of pounds a day.  I now have him on 10% and am tapering him off.  He does not need to gain any weight, nor does he need any 'jet fuel'.  One thing I'd like to do it train him to 'park out' for mounting (stand in a stretch), since it will make it easier to get up on him (he's 16.2) and may help to keep him still until I can get both feet in the stirrups.  The other thing I need him to do is to stand quetly when necessary, so I figure parking out would be usefull there as well.  Do any of you have any experience in teaching a horse to park out?  Have any of you solved the 'don't-want-to-stand' problem with your horses?  Any tips for quieting him down would be great (horsey Prozac?  ;-) ).  He's a blast to ride, and settles down after an hour or so, but it would be nice to be able to have a slightly more relaxed ride with out having an hour of hissy-fits first.
I am also considering clicker-training, but have not started yet.