Here is an anecdote about COG: I carried for years a Bigfoot 9.6 camper that weighed a measured 2800 lbs (says 2200 on the sticker). I went to pick up my new camper, a Bigfoot 10.4 (2900 on the sticker but later weighed at 3500) and immediately on leaving the driveway noted that it drove better. It felt heavier in acceleration and braking, but the truck handling was noticeably better otherwise. Doing some careful weighing of both subsequently, I determined that the COG of the 10.4 is about 3-4 inches ahead of the 9.6. This may be do to the forward location of all the water tanks, propane, and batteries. Also bathroom and fridge are forward of axle. Both are basement models, but the floor of the 10.4 is about 3" higher than the 9.6. In any case the change in COG more than compensated for an extra 700 lbs, in terms of truck handling.