Dan Koretz wrote:
I have a glass boat (Impex Assateague) that I have been carrying with
old Yakima saddles. I have been looking at the Thule Hull-a-Port and
Yakima HullRaiser J-racks, which make it easier to put two boats on a
narrow car. Anyone have any idea whether one is better than the other,
or a reason not to use either of them?

J-cradles put more stress on the crossbars, due to the leverage they
have. They also create more sail area in a crosswind. Depending on how
strong your rack installation is, this can be an important consideration.