Thanks, appreciated. I think i'm overly worrying about the spoiler, I suspect while not ideal it's at least substantial metal being part of the boot (as opposed to a plastic add on). Good idea re colour coding and I suspect i'll be deploying some old inner tubes and pipe lagging to make sure.
I'm trying to get something that works on both the Outlander and my wives SLK so roofbars/towbar solutions aren't really an option.
UK MY16 4HS in Grey