[sunfish]

The torch is to see back into the dark recesses of cracks and holes. I'd second what Fleshy say's about bleach of course, though I've never heard of anyone doing it. I sometimes use a hook made of stainless steel wire and taped to a piece of cane but this isn't infallible. If you do use a hook, be careful not to hurt the lobster with it, in case you can't get it out. You don't want to leave it behind damaged and it could turn out to be undersized too. Size isn't that easy to judge when all you can see are the antennae and claws.