I've done mine with bolt on rain gutters. The trick is, you must make a spacer
block to go between the bolt on rain gutter and the pop top.  This ensures
that the rack tightening bolts won't run into the side of the poptop before
the racks are tight.  This option allows you to raise the roof with your load
on.  I can still push my roof up with two play boats or two bikes. Drilling
holes in the poptop isn't a big deal.  let me know if you want more details.

Greg.
82 westy.

Tim Beidel wrote:

> I just purchased a 1987 Westfalia and am trying to figure out how best to
> deal with the kayaks and boats.
>
> * Will the Yakima 1A HiRise towers clear the camper top on a Westy?
>
> * Will the Yakima 1A with the 3.5 inch extenders work just as well on a
> Westy?
>
> * Any recommendations for a trailer that can handle both bikes and kayaks?
>
> Thanks
>
> Tim
> South Portland, ME