Gary wrote:

I'm not inclined to drill holes if I don't have to. :-0

With regard to glass mounted antennas, I have never seen one that would
work properly over time, so I will avoid those as well.

The Diamond K515SNMO looks promising but it must live on the side rail
and not more centered. The cross members of what I am looking at
resemble an airfoil and are about 3 inches wide. Would be nice to have a
bracket that would fit over and under that cross piece and then mount to
the bracket. I might have to get some stock and go to fabricating.


There is one problem with mounting on the cross members of the rack...
After time, the cross member will be twisted due to the force on it from
the wind pushing on the antenna.
It will happen faster the higher the ambient temp, and material of the rack and
color...
The only way to keep this from happening, or to minimize the flexing, is to
mount it as close to the side rails as possible..
I would add an extra cross member right behind/before the stock cross member,
and attach an aluminum or stainless steel plate with NMO hole to mount the antenna.
The resulting setup will be much stronger, and negates the special
clamp/mount needed..

Bob N9LVU