Am thinking that Hanging it is a better option. I like your metal joinery idea Jack.

I think that I will make some sort of a strap similar to yours and join it with two pieces of metal bolted together to hold the webbing. The metal pieces will have a hook or a chain link welded to it and a rope would then go through that to the ceiling and then block and tackle it up and away.

With four attachment points the weight per strap would be fairly low.

Thanks for the help everyone.