The people from Alu Cab got back to me on the Shadow Awning.
Hi Charles,
Apologies for the delay.
I lost your mail, and had to reload all my mails.
We had a look at the Awning and are very scared to actually recommend an install on Fiberglas tops.
In our experience we found that the vibrations brittle up the fibre glass and the awning eventually tears out of the unit.
I am sorry to be the bearer of bad news.
regards,
Puts an end to my shadow Awning research, although it surprises me that they did not offer an engineering approach for me. Or maybe they had, and this is thier reply. I will now be waiting to hear from John at Ursa Minor on how those brackets shown above can be adapted for a first generation Ursa Minor top.