FWIW quick measurement... my Gamiviti is <2" above the shark fin. The feet are adjustable but in my experience there was only one position for the feet height that worked on my 200.
If anyone has the Gobi rear ladder installed on their 200, I'd like to get measurements of the ladder when the trunk is open. I've been considering one, but I have a suspicion I'll need to shift my Gamiviti rack forward slightly to get it to fit, assuming it'll clear at all, which sucks. Almost worth having someone fab up something for me.