Go to WalMart and get 50 lb Shakespeare. It is quite large in dia so the fleas cannot grab it. It is also very inexpensive. Put on about 200 ft, this is enough to cover your vertical member from the down riggers. Put on about 20 ft or so of 25 lb test leader to cover the distance behind the ball. Problem solved. Pay attention to knots so you don't have a problem thru the rod eyes and level wind on the reel. Has been working for me for many years.