I used to tie a similar knot when Spectra was first introduced to the fishing industry. The Spectra had a Bimini to make a loop and it was tied as a Modified Albright with about 20 turns. Kinda bulky and didn't go through the guides very well. I used to use it to connect Spectra with a long top shot. Maybe 100 yards.Go on the Vagabond sportfishing website, they demonstrate a knott they use. They fish it up to 80 pound, it's kinda like a double RP knott. It's caught tuna up to 200 pounds. Easy to tie, once youre fairly efficient at it, takes about 15 seconds. Probably good for most fish you will encounter, excluding hurricane bank or puerto Vallarta. Then the FG is likely you're best bet!
The FG holds its strength a little better and the profile is smaller when using heavy leader and a night main lineSo, what's the difference between the FG and the John Collins knot? I like the John Collins and just learned to tie the FG, but the JC knot is way easier and almost the same profile. So when is one better than the other?