[fastpat]

Since you have a coupe you just need something in the windshield at least, over all windows is better. I think there are "Mini-covers" that do that.

I have a ruined Targa top that went from very good condition last year to embarassingly ugly now, all from sitting outside sans cover. I'm sending the top off for a full recover this week.

But, as others have said, garaging is much better.