Best way is 50'leader - lead core line (2,3,or how many colors u want) - colored dacron backing(use 20/30lb test,it's easy to see and release slides great).. but use backing as release slides down further, using straight lead core is to heavy causing "bow" and release won't slide as far out away from boat.
I connect with albright knots. I don't like using mono backing as you need to watch tow line/release location...one other thing, I mostly only fish otter boat out of the left (port) side of boat because more relaxing with no neck turning back an forth,also easier to run only 1 otter boat but alot run 2 otter boats which might be o.k. if you have another person helping u.....