Here's some video instructions on how to tie a Double Figure Of Eight. The Double Figure Of Eight is a quick and easy loop knot that forms an end loop. If the double figure of eight is tied midline it is called a blood bight knot but when tied as an end loop the name is double figure of eight. It will retain around 70 percent of the lines breaking strength and can be used to attach hooks, sinkers or droppers. Watch this video knot tying tutorial and learn how to tie a double figure of eight knot for fishing.