Mono to braid knot, really easy and strong

[Anthony]

Originally Posted by Sharkyispy

Shared this on FB page....This knot, known as FG is super easy to tie, I really like how thin it is for easier feed through the rod guides. Quoted as being a very strong knot so worth a shot......

http://www.fishcrack.com/fishing-101...braid-to-mono/

I tried it a few times and the mono keeps slipping..not sure what I am doing wrong. The half hitch goes over both braid and tag end of mono?