i tie them right on the treble hook, however i will try some on the coil as steel'n'esox mentioned, it sound like a good idea, esp when you have to cut hooks, this way you get to keep the bucktail untouched an just attach another hook.
the two spinner with big colorado blades were made by me, the parts:pack of already looped wires from ang spec i think it was pack of 50 for $5, beads, blades, clevices and trebles from bps.
here are mine