RE:Favorite striper hook
My two hook failures with the Tiemco 811 series happen at the start of the bent just after the straight shank of the hook. In either case, the fly was never snagged on structure or any other debris.
In this situation, if it wasn't a casehardening metallurgy problem, than the only possibility left would be a fatigue failure.
Fisher's don't realize it that when you fish Clouser type flies, the eyes themselves gives the fish some leverage. Now they have a fulcrum point to use to their advantage.