Artoomis said:
No - Trample denies your opponent the opportunity to avoid you during an Overrun. you also get one hoof attack @ +4 (for the bad guy being prone).
So can't you just do an Overrun on them after you hit them with the charge?
It only says you do it as part of a charge action. I don't see where it specifies that you can't do it after the attack, when you have the option of moving afterward (as with the Ride By Attack feat).