The clip you normally hook onto the downrigger ball will clip to the top of the vertical blades. At the lower end of the vertical blades will be another snap to hook the downrigger ball onto. (Comes with the setup... no need to add a snap)
I have not had good luck with them up top (top 15 feet or so) so I don't get into using them much until mid late June. Maybe some other guys have though.
I only started using the horizontal spinners last year.The first day I was using them was in April and at 10' down [about 8'-10' back from ball] I got a hit and I just happened to see the flash of the fish.I thought that was pretty cool.This year I'm going to try the vertical one I got at the gathering.I was told you can use both at the same time.I'll give it a try.