In the Mog, we're hopefully going to hold it just above the windscreen (if we've got the top down) or out of the side screen window if not.
This is what we do when using it in the Mog, it works fine like that.
I didn't put a screen fixing on as I thought if I did I'd be quite likely to forget to remove it when parking up, leading to it getting pinched or rained on.
