I don't see a problem using roof basket. I use my basket to haul 3 river Kayak's
one flat two on their sides 12 footer's 50#'s each @ 70-80 mph a lot no problems.
My rack is home made has 6 attachment points using factory bolt size, weighs
46#'s. I figure the load is going to be same approx.
Ive had a caone, kayak and related stuff on top.
wonder how much the wheels and ko2's weigh, don't have a bathroom scale