So you got a brand new top of the line AS and you want to take it off-roading?
This thread is about after market axels somebody saw. Seems to allow you to lift the trailer more than the Dexter lift.
The guy on this tread put beefy independent suspension on his old Sovereign
. There's another thread on here I can't find right now. If I can find it I'll put it on here. Same idea though, beefed up frame and bad-ass lifted suspension. Down side is these are both full shell off rebuilds.
Check videos for Black Series trailers. Aussie built off road travel trailers with serious suspension and other good ideas you may be able to adapt. They drag them on some serious trails.