Catching a rogue crab

[likwid]

Originally Posted by The Codfather

Hasn't done any damage.......yet. Don't leave him, sooner or later, he will start doing damage. I had a few unwilling to come quietly, patience was the key, try feeding a lot less frequently, sooner or later they have to come out to feed. I had to check in the middle of the night with a flashlight, but always seemed to catch them. Thanks,
Bob

How do you catch them when they are feeding though? The only time I see him feeding, his body is almost completely hidden, and I can just see a claw reach out to pick stuff off the rock. Like I said, he is lightning quick, there is no way I can catch him without a trap of some sort.