I'm not planning on using a weight distribution hitch or a brake controller. Not a lot of tongue weight on the sled trailer but the enclosure will be way above the terrain so I'm not expecting much as far as MPG goes.. I hope I have enough brakes but I'm not towing over mountains. My 1/2 ton truck towed this trailer with two sled inside very nicely but I had the 6.0 liter engine and 368 HP.. I only got about 11 mpg .. If I can get 14 mpg towing the same trailer with the terrain I'll be thrilled.. I wish the terrain had a larger gas tank. 15.6 gallons isn't much when towing a 2,200 lb. loaded trailer. I bought the dometic mirrors that trailerhauler recommended and they fit great and will not scratch my chrome mirror covers as the clip on to the bottom of the mirror housing.. I bought 17" wheels and bridgestone blizzak ws80 tires for winter as the 19" OEM wheels and hankook all season tires just won't cut it in the snow. Wish me luck.