has anyone ever used a dual hitch? These are used to adda cargo carrier or a bike rack above the tongue of your trailer. Unfortunately they don't make a 3 1/2" drop with the additional 2" receiver over it, only a 2 inch drop as seen here. http://www.summitracing.com/parts/cht-45810?seid=srese1&gclid=CN6T25KOscACFUiGfgod8i8Aug

there are two different designs and I think one has the potential to be superior over the others, but wanted some opinions on the two.
this is the first: http://www.summitracing.com/parts/rrr-drh-1?seid=srese1&gclid=CKTRlrWOscACFU9afgodfkIA3A
this is the other http://www.e-hitch.com/part/45792?gclid=CM6a_oCPscACFU2Rfgod8CgAsQ

Comments are welcome. I will be pulling a 4x6 enclosed trailer behind the WK2 about 5-7000 miles on the way back from AK.

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2005 CRD new turbo @100k, engine rebuilt @ 113k, Purchased with 115k now 135k.

Just an idea but have you considered welding a receiver tube to the trailer and mount the carrier to the trailer instead?

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03 Renegade (Black)
177k miles 3.7L gas - 45RFE
Command Trac / 4.10s
Lift: ft. 790+ rr. JBA4+
The last of the TrailReady Front&Rear Bumpers and TR Rock Rails
Jarhead Offroad light covers
31x10.5R15 RedLetter Grabbers on Blackrock Dunes
L.O.S.T #KD098632