Pretty cheap and simple....
A spool of 50# mono. Had to change the rope on my MG trolling motor this past weekend and was dreading it after reading/hearing all the horror stories about how hard it is to thread. Took the old one off and was standing there trying to come up with a way to get the rope threaded and it dawned on me that I had just bought a spool of 50# Big Game to make some catfish rigs with. Single uni knot with the mono on the rope and BINGO...took about 3 seconds once the knot was tied. Should be handy to pull power wires, transducer cables, anything that has to be snaked around or thru anything else.