He should pull a Henny Youngman!
Whenever Henny was asked to do a benefit or a roast he would get to the podium and just launch into his usual routine of one-liners... never mentioning the benefit or the roastee. It was a hoot.
If the moderator asks Trump a stupid question he should just say "That's a stupid question" and launch into his fine talking points...lol. It would drive them nuts :-)
If anyone takes a verbal poke at him he should just say the guy is a total loser and has no business being on the stage.
If Trump gets in one good line of the quality of Reagan's "I will not exploit my opponent's youth and inexperience" just stick the crown on him because he has won the election.
Take me wife, please!