I tried out Stren's Extra Tough. Man, they are not kidding! I spooled my downrigger rods with 15 lb. When the bite cooled off I started to jig with a 3 1/2 oz Pt.Wilson Dart. To make a long story short, I snagged on the bottom and I could not bust the line loose to save my life. I had to cut it! I was really surprised at this lines strength.