Invest in rubbermaid containers from Walmart, but don't fill them more than halfway with water (or they start to bulge...not that I've ever had one blow). They're great for moving rock..and you don't need to keep the rock submerged..With just a few inches of water, the splashing during the move will keep things wet. If you're really nervous about it you can wrap wet newspaper around them too, but IMO you don't need it.
Find folks with salt buckets too, they're great for moving other stuff.
If you can manage, drain the tank, but leave the sand..unless you really disturb it draining it out. It's less work putting it all back together.
Also have new water made and heated in advance..move your RO the day before the tank and start filling something (like brute trash cans) if you can. Personally I don't bother trying to save a whole lot of water if I can prepare in advance.
I've moved tanks several times so there are so many different things you can do but I'll give you one major warning...know your corals and animals...don't mix things that don't like moving together. I made the mistake of moving fish with an anemone once and when I started acclimating the tub that had them in the anemone stressed and wiped most of the fish out. I was only "moving" from one tank to another (so there was no travel), but what a disaster.
Good luck.
And if you're moving 2 hours south and you need some help, let me know. I live near Reading so 2 hours south of you now is here.
