there are many ways to do it,.. but i am sure that each boat, gear and spin have their own optimal way to get it to work best....

i have a 2 patch (mid pole snuffer) and i run the line all on the same side of the spin. i have a little ring on the lower patch (for the line to slide through) and a tie off point on the upper patch.

I would strongly suggest you seek other boats with spins and see their system,.. or even better crew with them to see it in action.

For ME, i was miserable the first 12 times i used it... the next 10 it got better... now i LOVE downwind with the spin....