If you can get any clams, they usually make the best crab bait. They don't have to be razors, but you can use the scraps. All the other less sought after clams work well. Some of the tribal/commercial guys I know say that when the state season opens and state crabbers have ten times as many traps in the same area as they do, they will load up with clams and catch more crabs than all the sport traps combined.
And I agree with a few others....killing the engine on the big water as a joke isn't funny. That dude would never set foot in my boat again.