tried the gills that could only be caught with live crickets, was out-fished about 6 to 1 but had success with march brown and cap spider. had a troubling experience with my improved clinch knot coming untied in 3 seperate hook sets on what felt like very good fish. my fishing companion had same experience on two occasions. anybody every have this problem or have suggestions? this occured using cabelas 4 lb tippet material that i had added to my tapered leader.