I need help with 5a 720.

I just cant seem to get enough momentum on the counterweight, every time I try to do the trick, the counterweight can’t make a full rotation and just wraps around the strings.

Thanks

Post a video. I might want to try this. Is it basically a continuing 360? If so, can you do a 360? I would guess you could, but if you can’t, that is your problem.
Also, instead of just letting the yoyo carry the counterweight, throw the counterweight to give it some umf ( ;D), if you need to.