When I last made a big move (DC to Ft. Worth) I kept the fish in with the live rock in coolers with airstones. The corals I bagged up partially, but larger colonies were just partioned off in open topped rubermaid containers in the coolers. It was late May, and I didn't have any issues with temp. I was only moving a 40g tank in a the back of a camper topped truck. We drove straight through, and I setup everything when I could when we got in. I lost 1 fish out of 6 and a few sps frags, but not much else. As always, YMMV.