I have been tying the improved Clinch knot in mono for as long as I can remember and have never lost a fish to it. However, yesterday I lost 2 Bull Reds, 30 inch range because of that knot. Reason, I used the clinch to tie my Flourocarbon leader to the main line swivel which I know is a no no. Normally would use a Palomar when tying Flourocarbon, which I did on the hooks. Two different rods both rigged the same, both lost fish back to back within 30 minutes when the leader pulled loose from the swivel. This getting old is no fun when you have these kinds of brain farts.