Since we're talking about Craws I wanted to get your opinion, MT (or anyone else) on these from River2Sea.  They have 3 different options, all of which look pretty good based on the little videos that demonstrate their action.
First there is the Stand N Yabbie:
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Then the Super Yabbie, which is the same but rigged weedless:
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And finally the what appears to be the most sophisticated of all, the Dahlberg Clackin Crayfish:
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Have you used any of these or are you familiar with them?  Based on the accompanying videos, what do you think of the action.  I'd be interested in experience, feedback or impressions.