I use the FG knot to attach mono to braid on my light braid saltwater gear, which is more or less the same as conventional braid barbel gear. I have been using it for about ten years and it is in my opinion 100% reliable, it works like a “chinese thumb trap” the harder you pull, the tighter the knot grips . Another benefit is that you do not get the “ bump” that you get with conventional knots when you wind the knot through the tip rings .
I cannot seem to load up a video, just go onto Youtube and search “ FG knot “
David