The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
To be prefectly honest, the blood knot is pretty much fixed in my "muscle memory", it's something I can do without thinking...
BTW Kurt, this happened when only the fly was stuck and the rest of the leader was definitely not wrapped around the branch.
As for small diameter tippet, for 5X and smaller, Enrico Puglisi Powerfull Tippet is exceptionally strong.