Delegates with friends and families attending, ask them to kindly consider voting for a Paul slate. All you have to tell them is "Romney has it all in the bag, right? Well, just help us further our cause of liberty, please vote with the Paul delegates today."
Or something like that. I'm sure you could sway a few people with that line of thought. Just ask any friend and/or family member to consider voting for a Paul-friendly slate.
Oh, and if you happen to do any chatting before or during the convention and you hear of someone who hates Romney, that's OUR chance to bring them over. Don't be shy!