I used a plastic shed made by "Thinking Outside" and it works quite well. These buildings are sold buy Sam's Club for about $800 floor and all. Half of the roof can be unbolted with 6 large plastic screws and you just slide it over on the the other half. I mounted the building on a frame of treated 4x4s to level and anchor the building for high winds. This building cost less than the materials to build a standard building and it went together in about 2 hours. As for security I, installed good locks, but the best security is that it looks like hundreds of other lawn building that only house "shovels, rakes and implements of destruction"
It just doesn't draw attention.
John aka CCD-Freak

John aka CCD-Freak
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John
CCD-Freak
WD5IKX