If you're looking for a good crayfish imitator.  I would recommend the River2Sea Stand N Yabbie, they don't cost a lot of money.  The good thing about these is there claws are air injected so the stick straight up like a real crayfish.  They're pre rigged with weight on back.  Great lure

they are awesome for smallmouth fishing. the smallies cant stand them getting near them. they have to eat them love the standn yabbies. and they always standup and very durable.

Thanks for reminding me about them! Now I'll remember to pack some for my smallie trip tomorrow.