I wrapped mine in a padded shipping blanket. The Dolly straps held it in place. I sure don't miss those days at all!
During my Hammond demo days.. I used a similar way to haul a Hammond.
The soft cover was like the shipping blanket Don used , but was fitted for the organ. Then I used a custom dolly that stayed fastened to the organ. And last but not least, I used a custom designed Ford Econoline to haul it.
It was okay for commercial Demos like Supermarkets or shopping centers. (Gather leads).
But "Home demos" were for the birds
What a beautiful thing... carrying a 46 pound G70.