bead string

I just bought some power pro bead string, has anyone ever used this stuff. If so will it take a crimp bead or do you have to knot this stuff. I like the way it hangs and feels but I also can't get it through a needle then a bead. I had to tie some nymo 00 thread on it to allow the beads to be strung. I want to finish off the ends but don't know the best way to do this. Roxan