Some yards have put in high rise storage to maximise use of space, with specialist equipment to enable an easy and fast launch and recovery.
Call me over cautious, but that large sports cruiser (above) looks just a little top heavy, perched right the way up there. Come the winter gales, with all that windage, I just hope it's going to be strapped down securely.
I know these boats weight a couple of tons, but to my mind those base rails seem a little narrow. I think I'm happier with my boat floating safely in the water.