I have used whipped loops and of course factory loops for loop to loop connections for a long time. However on a recent trip for trout nymphing a deep slow run i needed a leader longer that my fly rod to effectively catch fish . About 1/3 of the time after landing a fish my fly line loop would get hung up in the tip top when trying to get my flies back in the water. i am also interested in trying French/ Spanish nymphing this coming year which use leaders much longer than the rod so i am really interested in the strongest line leader connection that goes in and out of the guides like it is not there.