Camry
I had a Pungo 140, a Necky Zoar Sport and a Carolina 12 all up on my Camry last summer with no problems at all. The racks were Yakima.
Problems with bowing
A good point is brought up here. Especially in the heat of a North Carolina summer, my boat starts to look like the Concorde on top of my car. Anyone else have any good suggestions for preventing this?