I just got an 01 Calabria pro v with the factory pure vert 700lb ballast and was curious about adding more ballast. never had a boat with a shower so I'm not 100% sure how the shower gets its water supply but was thinking if you could use the shower line and the pump it has to put water into a few fat sacs and use a pump to drain it so you didn't have to throw a pump over every time. Has anyone thought of this? tried searching for it but found nothing. Thanks.