The only strap trailers I am vaguely familiar with are the Cottrell CX 5308 & I think Wally Mo has a strap conversion now.
The CX 5308 looks amazing, but curious if you can scale it fully loaded on the trailer axles. Most 8 car high mounts have issues there.

I like Miller trailers & the guys down there, but trailers are NOT their priority & do not see them pushing a strap trailer any time soon. They may prove me wrong.

As you can see, I know the main high mounts, but do not know much about the stingers. So if you guys want to add some things to look for(brands/models etc.) or set ups that need to be on peoples short list to buy. Post it up.