Car that can be towed 4 down without too many modifications

'07 Ford Explorer SportTrac w/transfer case neutral kit ($200.+ 50 to have the dealer program it.)
Mazda says not to tow my '95 Miata 4-down due to the tranny oil pump being on the engine side, but many posters have successfully. We stop a couple times a day and start it and run it through the gears. Bumpy's advice might not work for me with this 2200# Miata pulling a 26,000# beast backwards. How would I stop it? Might cost me a clutch, too.