Remco website says Honda Element is towable 4 down 2003-2009, both manual and auto transmissions.
In 2010, Honda changed the transmission to a 5 speed automatic and dropped the manual trans.
No idea if the new trans can be towed. Check the Honda Element forum, maybe someone over there is doing it.
2007 Winnebago Journey 39K Freightliner Chassis, Cat C7