50+ years ago, at the local GA field, one company had upgraded from executive DC-3's to the Gulfstream (today we call it G-1) and had a similar problem hangaring their new toys. They developed their own tow/lift truck to resolve the problem.
Similar problem: You often used to read about someone building a boat in their cellar, and the only way to do the "launch" was to knock out a foundation wall and excavate the hedges, and drag the "Queen Mary" out. Then rebuild the wall, refill the ditch, etc. I have also seen homebuilt aircraft rolled out the same way.
