[Zeal]

John Skinner has a great video on youtube of him in a kayak going for Tog using a Tog Jig tipped with crab..




Make sure you use a sinker to crack the shell to get the crab juices flowing as it can make a difference between getting a hit and get ignored...

Also, I second the emphasis on a strong hook, those fish can and WILL straighten them out.

Also, here is Mr. Skinner scuba diving showing their behavior...



I have yet to really make an attempt at them.