I have an 18' flat deck trailer that I use to haul my Jeep. Jeep/Trailer combo weight of 6500# (trailer is rated for 12,000#). Using the 15% rule for tongue weight, I am running 975# (trailer is rated for 1800#) on the tongue. I have decided to run a WDH. I find that the Tundra steering is lighter than I like. I have been getting some conflicting information reference running an Equal-i-zerŽ hitch on a C-channel frame. Some say I need to weld a piece of metal in to box the frame where the frame mounts will be installed. Looking at the Equal-i-zerŽ installation instructions, it appears 2 flat pieces of stock run on either side of the frame making a sandwich. Anyone know why I need to box in the frame? Anyone running an Equal-i-zerŽ on a C-channel frame?