I bought a couple of bike rope lifts off Amazon, they are 15 bucks each. Screwed a couple of 2x12's to the rafters. Ran a 2x4 across the front and back with some eye bolts in them. Hooked it and lifted. Yea you have to have 2 people to do it, but still pretty cheap. I keep it secure with a couple of ratchet straps through eye bolts in the ceiling. Been there 7 years now, I've never taken it down but can't imagine it would be very hard to do.
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I did the eye bolts directly in to roof of garage/stud...