i would highly recommend trapping, its a great hobby. just don't let the Anti trappers get you down.I forgot about that. I'm not a trapper (hopefully someday though) but I think that is the rule here, too. I believe it's because they will just chew their leg off, which is less humane than drowning. Beaver traps are underwater too.
but i hate to see animal hurt so now we use padded and off set jaw traps to prevent blood loss to the foot that would cause chewing. (it's illegal to use a trap not deemed humane)