Look no further, sir. Why even take the time to load the games onto a trailer?! Jeez... What a waste of time. Do what I've always done: Just tie a rope around your games--daisy chain all thirteen of them, and tie the end of the rope to your car. Don't even bother unplugging them or even moving them from the lineup. As you pull your car out, they'll eventually line up. Drag those suckers down the road, and you'll be good to go. It might even buff up those leg levelers that are sure to be rusty!

In all seriousness, I checked out your collection. Most of those games have the ball trough that's mounted under the playfield, right? If that's the case, I highly doubt you'd need to remove the balls--especially if they're not going to be tipped around. Maybe in a game like Fish Tales (where it's got the standard on-rail ball trough), I'd pull them out and stick them in a labeled sandwich bag. Can't hurt.

I'm actually quite curious as to how you'll be doing this, as I'll be moving and that means transporting all my pins in the near future as well.