Time to replace my 13 year old custom indoor car cover.

Problem is that my 2008 convert has the OE aero package with includes a rear wing. I'd like a "satin stretch" cover, but it seems either I buy the standard which will may leave the bottom of my butt uncovered or the ACR version which will likely overhang onto the floor.

My 2008 cover was custom made to accommodate the wing. Can't recall where I bought it, but it wasn't a "stretch" cover.

Any ideas, suggestions?