Basically, activity doubles for every 10 centigrade degrees, so if the temperature in, say, December is 5° and in St. Marys Bay in the fall it's 15° or higher, then you'll get a doubling of movement and a doubling of catch. Particularly in a situation in which you put a few lobster traps in with bait, you're going to draw lobsters from all around, in contrast with having a lot of traps with a few lobsters in each one.
