If i ever wanted a do all thread ,GSP would be my pick. Unwind it to smooth out the body on the fly or use it for midge or soft hackle bodies,or split it if you don't have enough space for a dubbing loop. I also use it on flies where deer or elk hair is used. It's slick so it has a tendency to slip around on the hook.. and Super glue doesn't stick to it like other threads.