Mike,
Like many others, I have some experience with tramp launching a spin from a boat like yours. I have #111, '94 N6.0na. Now I have a retrofitted snuffer and I-20 spin.
Launching, first I put out the tack, then the head, then trim it. all going almost dead down wind.
Retrieving, make sure the halyard is not tangled, throw it off the stern and let it drag in the water, this keeps tension on the chjute as it comes down, so it doesn't end up under the boat.
collapse the chute at the foot by releasing the tack line, the release the halyard and pull it down onto the tramp. then stow it in the bag and clean up the lines.
I won't go into block placement and what I've done to route my spin sheet around the boards, and then behind the jib sheets. It takes three blocks on each side to do it, but iot really reduces line fouling. Your clew block depends on your foot length and cut of your chute. Didn't it already have a place for them for your set-up?
Good luck, let me/us know how it's going.
Todd Bouton
N6.0na #111
+spin and snuffer