MiamiTVR,
I totally agree with all your sentiments about open top driving "English style", as everyone knows i am from England and had 2 Triumph TR6's during my early 20's and used a tonneau cover if i needed to park for any length of time without putting the hood (English term for roof) up. Also, i like you always drive with the top down unless its raining, thats what roadsters are made for, hence my tag "OPEN TOP".
Here is a picture of the type of tonneau cover i used.