Hi, I keep losing most of the fish that I hook-up because of line cuts. On a 1.5 day trip at the tuna pens I used a 30 lb line, which broke 6 times. 2 of my fish went under the stern and broke the line. On 2 occasions, my knot broke. And for the other 2 times, my mono simply broke a few feet above the hook. On a 3/4 day trip, my 25 lb line also broke 6 times. I did change my knot though, and I think that's why none of my knots broke on this trip. 2 of them broke when the fish went under the boat, and once, the captain accidentally cut my line. As for the other 3, I have no idea why my line broke. How can I avoid having my line break? Thanks in advance.