The no stretch property of the line made me feel every shake of the head. The fish was fighting so differently that I kept asking what was going on. Finally my fishing friend reminded me that I had the Spider Wire. The second positive is the low visibility. I definitely got more hook ups with the Spider Wire than I had with the mono.
Tunas have excellent eye sight and are very often line shy.
The smaller diameter line made a difference. On one occasion, we had five fishermen in the boat, each with different line brands and diameters. The only fisherman that had as many hook ups as I had was using a 40 lb test monofilament line, compared to my 100 lb test. The third positive I found was the no memory quality of the Spider Wire. This is really nice.