Originally Posted by justsambam08
Get him to move forward! He can't get his head down if he's busy trotting! Carry a crop with you, or just use the end of your reins and smack him on the shoulder if he doesn't respond to your leg aids.
Exactly, and make sure you make a 'grazing rule' that you never
break, e.g. No grazing when saddled, or no grazing when mounted, etc.