You're welcome!
I never played enough stock to really miss the surface marker - in fact I don't even think I knew there was one until I reinstalled the game for some reason and happened to load something in stock and go to external cam when I was submerged. So I found its presence more disconcerting than its absence, lol.
But I put the colors/tails back almost immediately after adding GWX - which, like you, I did very quickly after getting the game and coming here for information. And I still have them there, and it may be a while before I let them go. That and manual targeting will be my last big hurdles, I think.