anutami
Wow as I look at the photos I am trying to picture what kind of a wind gust would push a 4000 lb camper over or thru a bed rail.
Tiedowns or not.
If you were in an off camber situation going up that berm. I could understand the forces required to create that situation.
As to camper tiedowns and construction the question becomes design intent. I do use torklift tiedowns and have no expectation they will hold the camper weight while of camber enough for the camper to roll over the bed. My expectation is it will hold the camper in place from sliding forward or back in the bed.
It appears the wind gust was enough overcome the ability of any tiedown system or rig was so far off camber the weight of the camper overcame the design intent of the tie down area of the camper.
just my 2 cents