Hi all - I am looking for any ideas/suggestion on where to put a second water tank on my 84 H31. I am thinking about installing a 30 gal tank right in the stern aft of the quarter berth since the mattress stops about 3 feet short of the transom. My only concern is this much weight that far aft might have a serious effect on my speed. Even though it would only be used while on 2 or 3 week cruises I don't want to put the brakes on too hard. Any thought/ideas would be gratfully accepted. Reg