I singlehand a fair bit as well.
I do not have an assym, but instead fly my old symmetrical kite as if it were an assym, using an ATN tacker. The combination isn't nearly as good as a genuine assym but it _does_ work.
I use a sock. It's actually an ATN style sock, but made as a "kit" from Sailrite. This style sock has an extra compartment for the control lines; no fouling.
I lead all lines back to the cockpit. Those are
. the sheets of course
. the halyard
. the sock control lines
. the tack "release" and
. the downhaul
The latter two lines are part of the Tacker. The Tacker has a snap shackle on the tack, for an emergency blow (have never even come close to needing to use it). The downhaul is as expected .. a line to control the height of the tack. Apparently, to get best performance out of a symmetrical spinnaker flown as an assym, you need to keep the foot level. (Makes for a lot of things to mess with; mains'l control lines, sheet, tiller, downhaul. Downwind is not the lazy doddle one might think.)
Anyway, back to the point. I can raise the kite from the cockpit (having first gone forward at some point to run all the lines), can raise the sock from the cockpit, and can douse the kite from the cockpit. But I have a horrible time lowering the snuffed kite, it always seems to get wet.
So lowering the kite then happens from the foredeck, with the autopilot engaged. I don't LIKE the dependence on the electronics, but until I rig up some other means to control the middle of the kite while lowering (one more line, methinks), autopilot it is.
Having lived with this for a couple of years now, I am sure that I will eventually
. retrofit a retractable bowsprit
. buy (sew) a genuine assym
. mount it all on a furler.
I say "eventually" because the current system is in that middle ground; it works decently well, but not as well as I'd like nor so poorly as to require immediate replacement.
Alan