I have always run with my side screens on. I don't use the little perplex wind wings that seem to always just be in the way. With the side screens on, I find that they cut down the wind noise sufficiently so that I can actually talk to the wife. Some folks would prefer not to talk to the wife, but this is their choice . . .
Also, they are always tight and when tight, I find they leak less.
Never had a rack with the side screen slot. I have had a good number of Morgan cars over the years and this has always been the solution.
Cheers,
Mark