A Dr. who is a crabber told my friend that it is ok to clean the crabs, and then store them in the fridge for up to two days. I tried it and it worked for me. I love fall crabbing when the temps are cool and I can leave a bushel in the garage without worrying about loss.
I know that guy, His name is Doctor Mushy McCrabs.
You don't even have to pick the meat out,...Just squeeze the shells and the meat comes out like toothpaste.

Seriously, you have to cook the crabs as soon as possible after cleaning them, because of the rapid breakdown in composition.