Why not rig in the lot and put in on the ramp. They've got to have a ramp in a marina don't they? Sounds like a lot of trouble to launch a H16. Once I'm to the parking lot, I'm in the water in about 30 minutes. That's rigging by myself. It is slightly shorter if I have another person. Is there a cost involved with the crane. That would be a show stopper for me. It would gripe the crap out of me to have to pay to sail my cat. I guess that I do use my park pass and that cost some bucks, but I use it all year around for other outings too.
Many yacht clubs do not have a ramp or a beach. They're set up for dinghy launching with a hoist. It's the only way to get in the water at some locations. The "cost" is being a member of the club - or a guest of a member.