My Investigator spent many years parked in the backyard. I used various covers to protect it but they all either fell to pieces eventually or managed to hold pockets of water. In the end, I gave up with covers and left it to the elements. The boat stood up pretty well notwithstanding the rain water that the find a way inside nor the deteriation of the woodwork. When my retirement was pending, I decided that a large shed was a necessity to occupy my spare time and, of course, the shed would have to house my Investigator as well as leave room for a workshop.
I settled on a shed measuring 8 X 10 metres with 3.8 metre wall
height. The 8 metre length was derived from the length of the mast plus a bit. I've had the shed for about 4 years now and am pretty happy with it. If I had a chance to design it again, I'd make it a little wider so that when the boat is in the shed with the outboard on the back, there was a bit more room to walk around it. I'd say the 8 metres is the minimum length to house the boat. Also, I would install a roller door that was wider than the standard 2.7m doors that came with the shed. You don't have much room either side when backing the boat in so some extra width would be an advantage. I'm very happy with the
height. It allow me to walk around on the deck without having to stoop. The skylight is very effective and I'd recommend one to any would be shed designer.
It really is good having the Investigator under cover. The only issue now is that it gets a little dusty if I don't take it out for awhile.

- My Investigator's mooring