Mine's in my garaged, trailered, but it takes up all the damn storage space for just a two-car footprint. If I could get access to my backyard with the trailer, I would place it there under a tarp, but I'd have to remove trees and whatnot.
My idea is to rent an airplane hanger at one of the small airports on the Front Range. The trailer and raft can sit there year round, and you can pull up with the truck, hitch up, and roll in 2 minutes anytime of year. Those hangers can easily hold 3 trailered boats (maybe 4), and I think some of the smaller airports rent them for about $150-$200 month. I've been trying to convince other friends to go in on it, but haven't found any takers.