gmw photos, you are correct in that some National Parks, etc you aren't allowed to have a popup/hybrid during certain times of the year, or during high bear activity.
To the OP, if you're looking for good gas mileage, you won't be finding it by towing what is essentially a huge brick down he road. In my case, I have two very boxy units (truck and trailer) I manage to get about 10mpg.
If you're only looking to buy once and buy well, I'd suggest an Ultra Lightweight from Lance. They have a superior build quality, plus a very easy tow-ability factor. Be aware that they are into the 2014 model year and that Lance has a 2 year warranty!
Take a look at the floorplans for Lance with the specs alongside:
Lance Travel TrailersTheir very longest unit is 28' but many of the mid-size models are around 22-23 feet.
I tow a 2014 Lance 1685 and am very happy with it!
WoodGlue
