Frustration over a crab

[Live Rock]

After staying up late with a red light, I can't manage to find that :censored: crab that hitchhiked on my LR! My rock is so large that it is hard to lift it up. What should I do? I can't put traps because it lives in an unaccessible area of the rock.:frustrat:

 

[mcmusashi5]

is it that much of a bother?

 

[Zissou]

I caught three of them by just looking at my tank at night, with the led moonlights on. I wasn't looking for them, just took the opportunities when I could. Sometimes they'll be out in the open at night, and if you're quick enough and catch them off guard, (I have some plastic tongs about 18" long), they'll lock all their limbs tight against their shell and act like they're a rock. Make them easy to pluck out, like a pebble. I put them in my sump, but I only see one of them regularly.