Agreed Luke.....I have never in my life had a uni fail me...?
Anyway here are some pics of the knot showed to me by Big Bad Pat....
For what is a very simple knot it seems to do the job nicely in heavy leader and is very strong.
I had to take pics as my drawings look like my daughters when she was two...
Pinch both stands at top and wrap tag end three times over both stands down towards lure....
Pass tag back through loop at lure end...
Holding tag end start to pull on main to snug down knot....
Tighten up snug....
Finished knot.....burn tag end..
Line used was 250lb Jinkai which is soft but it can be easily tied in harder material.
Pete