I was surprised to-see the Daytona Bike Week Condor employee demonstrate with a Sportster, which is very-close to a VMax Gen. 1 in weight, how-easy it is to load the bike onto the Condor dolly, and then to move it around. One of the 'secrets' is that while you can buy the somewhat-similar Harbor Freight Tools (HFT) motorcycle dolly, which uses a sidestand 'T' piece off the main longitudinal piece, with a Condor wheel chock on the Condor dolly, you just roll the front wheel into the Condor wheel chock, and it very-securely holds the bike in-place. It sits upright, not-on its sidestand.
Once in the Condor wheel chock, the bike was easily-moved around with one-hand pushing the loaded bike: forward, backwards, in-circles, you get the idea. The Condor has screw jacks to make-stationary the bike; it has a
wide-track (remember those 1959 Pontiac ads, anyone?) for the dolly wheels, and they're larger in diameter than the HFT dolly wheels, which greatly aids in the design stability. It also means that if your garage floor isn't perfect, that the Condor can move-across concrete cracks and uneven pavement without coming-to an abrupt stop as it might, with smaller-diameter wheels. In this, the wheel composition also plays a part. Early skateboards had steel wheels (probably stolen from your kid-sister's strap-on 4-wheeled skates) or clay wheels, which could come to an abrupt stop if it encountered a pebble, launching the 'sidewalk-surfer' (Beach Boys) like a catapult, off the suddenly-stopped skateboard. The Condor wheels are large-diameter, and of a material which allows them to bridge cracks and debris without calamitous results.
If you choose to 'roll your own,' those are important things you need to take-into account. The mechanical engineer who is the Condor principal already-did. His product is strong, well-designed, very-functional, and safe.
Don't be this guy!