what most newbies miss considering, is the air resistance of a 5000lbs.+ barn door! they focus so much on the weight without factoring in how it will feel pulling a high profile wall thru the air.
many expect it to be the same as towing a boat or popup or utility trailer. all of these don't have near the air resistance as a full height trailer.
in fact, the trailer's air resistance is more of a factor on gas mileage, than the weight of the trailer. that's why it seems silly to worry how much water you carry. an extra 200-300lbs. of water will barely make a scratch on gas mileage, when pulling a TT/HTT.
that's why Airstreams can give their owners better gas mileage than conventional TT owners. but you pay a price for those aerodynamics. it would take a lot of traveling to recoup the extra costs for one.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC