Sure would help if folks would put their trailer info in their signature profile - hehe
But it is fun guessing sometimes...
For me I like the Canada version dual tandem trailer. That's pretty neat for its size...
When it is lined up behind my F150 I don't think it would have alot of Wind resistance and maybe not too bad on gas mileage... hmmm maybe not...The first photo I was looking at was not dual tandems
another google photo:

Roy Ken