Don't forget to check the tip-up line. I was at a friends and family contest last weekend, and setup prior to the start of the tourney. Watched a nice pike come in and grab my shiner, I was using Sureset hook on 2' of 30 lb Flouro leader material. I set the hook, then snap, thought he bit off the leader, dropped the bait, or the hook broke. Nope, the 80lb tip-up line broke, and no, the knot didn't come untied, there was a slight curl to it. I may have nicked the tip-up line at some point.