Mark, the knot in your link is very similar to the improved clinch. The only difference your knot goes through a loop created by the double, i snug my double insertion to terminal down tight and put it through the gap in the legs as in the video.
I do need to test this new method though.
Funny Luke, I picked up my initial GT fishing techniques from an article in an old fishing mag from 2006 or 7, the story and pictures were taken on the French NC boys boat, I have a funny feeling you may have been photographed in the story as well, the magazine is long lost. I remember them recommending tackle and this knot which included the first Ian Miller 7'6" bluewater T curve 15-24kg..
. The rod took so long to order from Aussie that I had already located Japanese rods in the interim and it have never been used.