Nah, Case'll be fine for the tunoids... down in Harkers there's always a few Berty like boats doing the quick 180 to whip the fly rodder on the back into casting position!!
Case - I look forward to working those twin screws!! The trawler we had in the BVI had twin Cats and we would walk that thing in sideways to some of the moorings.
That's the only way to go!