This is pretty common but in case you haven't heard
of it , it works. Attach a long lounging rope to the halter, pull it through the
feed door and hold it tight with one hand(with gloves on, if your smart) and
stand a little behind and to the side of your horse. Use a buggy whip in your
other hand, on his rump to encourage him in and at the same time keep the rope
taunt, so his head stays pointed straight into the trailer. It doesn't take long
for them to figure it out and it's always worked for me. You have to be
persistant and firm. You can't be a wimp on this one, or the horse will
win.
