>When you mount onto the pop top you are not only stressing the plastic,
>but you are also relying on the top's attachment points to hold
>everything on.  Light weight items such as bicycles, skis, and
>surfboards that offer little wind resistance are probably fine, but the
>wind forces on boats can be high, especially when tipped on their
>sides.

Stuart,
This is a concern, but I have been reading rack posts on the list for about
1 1/2 years now and have never seen a report of a problem with mounting
racks to the fiberglass pop top (only seen expressed fears of a problem).
Have you seen any such reports?
On the other hand I have seen many posts saying they have had no problem
with mounting the rack to the fiberglass pop top.
Bill
90 WEsty Syncro