Flipping Axles?.....Well kind of

I have a Flagstaff 8528RKSS.
With my current truck I have almost 6" of clearance between the bed rails and the trailer.
This is with the pin box adjusted to it's lowest position.

I am looking at new 3/4 or 1 ton trucks.
I have noticed that the bed rails of these new trucks are significantly higher than my current truck's rails.
This causes me great concern and I do not want to be in a 'nose high' towing situation with less clearance than I have now.
So here is my question;
Is there a way to raise the height of the trailer?
I have Dexter torsion axles so I don't see a way to do an 'axle flip'.

A new fiver is still a few years away so I need to come up with a solution for now.

Any ideas?

Many thanks.

Bill