I've made a mobile platform to make working on the bike easier but getting it on and off wasn't easier so I've made this. Now I can roll the bike underneath, pass a 1m lifting strap through the headstock and a 2m strap through the rear footpeg mounted and the hoist does the work.
I would extend the metal hanging structure to cover at least 4-beams. Looks well sketchy imho on just two. But the concept is great, I've looked into doing this. I-beam with Lifting & Crane GT1 1 Tonne Girder Trolley
Mine cost £90 in total and is very useful - still need to put the bath under it though Free I section from work, Manual 2 Tonne Hoist was £80 NIB off Ebay (second hand but never used) Straps £10...
Ooo! I thought of doing that as well as I have a spare winch but the loading on the joists put me off. Mmmmm the I beam idea is good though. Perhaps I shall revisit it in the winter.