Attach bronze snap-swivels to the ends of all your lines. This allows you to easily connect multiple lines together to form a long trotline. As you pull in your line, you can quickly disassemble it by disconnecting the buoy lines, the leader chains, and the individual baited sections. Most watermen prefer using pre-formed wire mesh net bags as opposed to cotton, twine, or nylon since crabs don't tangle up in wire as easily and they cut through the water with significantly less resistance. Others prefer cotton nets since they can be laid down flat on the washboard whereas rigid wire nets can roll overboard when set down.
Some watermen prefer longer handles, but they have a tendency to break off easily.
Choose a dip net that is most comfortable for you. A wide brass roller is mounted horizontally at the end between two vertical guides. The trotline is pulled up with a gaff and laid on top the brass roller between the guides. It's not hard to rig something like this up. Some people use a household rolling pin as a roller.