David, you really have it going on with these mods! Here are a few of mine:
1. I had a custom asymmetrical spinnaker made (got to pick the colors!). I use a spinnaker pole mounted to the mid crossbar under the mast, it runs through a hanging rope at the roller furling and is held down by a rope attached to the front crossbar. The tack sheet runs to a cam cleat mounted on the mid crossbar and the clew sheet runs to a cam cleat mounted under the rear wing seat arm. That is a bit far back, but it is much better than at the side stay and I don't like lateral forces on the side stay either. I don't use a snuffer chute, but instead just pull the sail down and stuff it into a turtle bag. As David notes, this is a light air sail and is a lot of fun on light wind days (think August below 10 knots).
2. I did not like passing the tiller behind the mainsheet while tacking, so installed a second tiller, both of which are extendable. Each tiller rests in a custom plastic cradle attached to the crossbar when not in use (on the lee side).
3. I attach square personal flotation cushions on top of the wings each side at the helm position - for my comfort and to have at the ready in case of an overboard situation. I use clips for easy removal.
4. On the beach, I use a dog tether ground stake spiral-screwed into the sand to tie the bow down at night. This keeps the wind from getting under and flipping it, which is a byproduct of being up on the beach wheels.
I get so many curious people stopping by on the beach and have given many people their first sailboat ride! That's a lot of fun and of course I always recommend that get a Hobie as a starter boat (the Wave is good for that). Hey Matt Miller I ought to be getting a commission for this!

Take care and be safe everyone! Holland.