Visit the Team Iceshanty Proshop
I tried some 15lb Boa Malin No Kink this weekend, and had 4 break offs on the hookset. I think I might have tied the knots too tight Used clinch knots and tightened both tag ends at the same time with pliers until it stopped stretching. No further. All 4 knots broke at the barrel swivel with most of the knot still on the swivel. Wrong time of year to be experimenting with new gear.
I'm using 20 lb. Boa and have caught numerous pike on it before it broke. I use a simple clinch knot, wrap four times around and cinch it with hemostats. You're pulling too tight with thepliers. You don't want pull until they stop stretching. Leave about 1/2" to 3/4" tag and the knot slightly loose. The first fish will tighten it further but not as much as using pliers.
I have used both 20-30 boa I prefer the 20 use a figure 8 knot the clinch will break. Good Luck