Best way to cook King Crab?

I never seen live king crabs at the store before. They are usually available only frozen. I grilled blue crab this way before and all I did was pull off the top shell and cut them in half. However, I prefer blue crab in a boil.

 

I'm going to have to try it. You use any rub or marinade?

 

Boil/steam them in a big pot with only 2-3 inches of sea (or salted) water.

 

I don't because I like my grilled foods au natural, but many recipes on the web use butter or olive oil and cook for 5 minutes.