There is a guy down the road from me who was trying to selling an I/O trihull all summer, likely around 19' long or so. It's on a nice shorelander trailer, and the gelcoat is in great shape. He's moved it around the yard a few times, and it eventually ended up on a spot he leveled off and put up one of those steel garages. It disappeared for a while when the weather started to really turn bad, and then showed back up about a week later. It sat outside uncovered through the first few snow storms we had here until he finally got around to throwing a cheap blue tarp over it. I didn't see any provisions for tarp supports, so I'm betting with the snow we got last night the tarp is already sagging under the weight and will likely collapse soon.
As we drove by it the other night my wife looked over and said "that poor boat!" It should be interesting to see what happens with it next spring.
He also has a nice 57 chevy I've never seen move that sits out by the road. He would throw a tarp over it weighed down with a few old tires for the winter. At least it is now inside his new garage.