I guess that's where the buggery comes in...
You mount the eye-bolts in the joists, lad.
AHA! I needs me a new dictionary, apparently. Let's just go with the term friggin' in the riggin'.
Come on now lad, don't be shy; tell us where you really like to put it round!
Lol. Women get bored in winter time, too. That's all I'm sayin'. I'd install a trapeze if I new the roof was sturdy enough....