2 more cents
Moved a couple projects this year using about the same method with good results. Weather dependent, I actually prefer the open trailer for easier access to things, generally more tie down points, and to keep an eye out for unwanted movement.
Here's a shot from picking up my father's new-to-him RV-8 over the summer.
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Rv-8
I prefer to strap directly around the main wheels/over the axles (being mindful of brake lines etc). Securing the aircraft by its main wheels lets the spring gear do its job on the drive home.
Versus strapping to things like tie down rings or engine mounts which still allow for your gear to flex (up/down, fore/aft etc), slacking and twangin' your straps
Extra strap was then wrapped/tied up to keep it from blowing around (hence why it looks like a jumble of strap).
Not shown is the strap that went around the tail wheel, and the tailwheel turned 180 degrees to keep it well away from the edge.
A must-have if the prop is on is a sling to stop it from trying to windmill.
Either sturdy gust lock, or a seatbelt around the stick to keep elevators from dancing.
A winch would have been nice, but the low trailer let the three of us wheel it up a couple ramps fairly easily.
No road rash, dings or departed parts on the 80 mile freeway drive home, just a whole lot of thumbs up
And, if you don't already have it, pre-move would be a good time to look into insurance.