I have three tie-down straps (for loads on trailers), looped over the rafters in the garage. The two on one end loop under the handlebars, and now I use an S-hook on the third that gets hooked on near the seat post. I grab the loose ends of the front straps and pull, then the same for the rear until it's where I want it. A bungee cord looped through a concrete block provides stabilisation from below, when needed.
Sort of like this: