I have seen the pic, but Google ain't helping tonight.  Essentially,
without the hole, the boundary layer stays attached to the rear of the
van.  Quite similar to the white small poptop in the windtest jpg.

The best thing to put up there is a cover for the hole. ;o)

Jim

On Jan 20, 2010, at 5:30 PM, Dave Mcneely wrote:

> But, the original question was how the camper did compared to the
> pictured vehicle with a poptop but no luggage rack.  We don't have a
> drag illustration showing a vehicle like that.  How do we know it is
> better, worse, or the same as the camper with the luggage rack?
>
> BTW, the only stuff I've ever put up there was a rafting dry bag once,
> and firewood another time.  No cooler or lawn chairs.  David Mc