I haven't personally heard every utterance out of either Hillary or Trump, but without question all political candidates make gaffs. Whether or not those gaffs ever hurt you is largely determined by whether or not you have a large contingent of enemies in the media who want to destroy you. It's really that clear.
That said, if I were Trump's campaign I would release, each and every day, a list of what the left and the press said I said, and then follow that with what I actually said, and what that meant. I would make it widely available, online and everywhere, and emphasize to everyone that this is where to find the truth and reality - and that the media are welcome to try to refute that truth, but won't be able to.
I would also release an ad that goes down the list of things the press and the left said about every Republican candidate since Reagan: Reagan's unpredictable and dangerous, Bush is stupid, Bush bugged out on the National Guard, Romney is an out of touch rich guy who puts his dog on the roof of his car, Dole is a nice senile old man, etc. etc., and point out that it has been consistently the other side who have used name calling and the politics of personal destruction.
Problem is they don't have the staff and the foresight to do just that.
You should tweet at Trump. Great ad. Maybe he’ll run it. If he ever runs one.