True, the vee front cargo trailers add some great useable interior space, at the expense of useable outside space for such things as battery box and propane storage, but I think the above poster was talking about retrofitting a vee front onto an existing flat (or is it rounded/flat?) trailer in the pursuit of greater fuel economy and I don't think this would be the result for all that the work such a project would involve.
Now if the trailer has a real flat front and a guy were to find and install one of those bulbous things you see on the top front of some freight truck box trailers, that's a different story!
It's the point that people are attracted to the idea that a vee front cargo trailer will knife through the air instead of us pushing a box through it. What a vee front does though is increase the area of the front susceptible to drag via wind from the much more frequently encountered tangental angles, and not just straight on wind resistance.
Not my hill to die on though and the subject is addressed to all opinions quite thoroughly on sites like the huge Woodalls RV site.
My apologies for drifting off the A/C topic so far.
