i dont' have a crash pump on either boat... dont spent enough time far offshore to bother carrying one. rarely more than 25 NM from lands even...
dont' be sorry... the rules are pretty much the same for all coastal waters and the rules Marmot quoted from Ma. apply in other states as well....
Having two heads is nice obviously and redundancy is always a big plus so if you have room I d go for it.. For a couple onan44 footer a VENTED...
The best upgrade is to add pumps not replacing the existing ones as it increase redundancy Regardless, you still need to check them regularly (...
then indeed permeating hoses are not the main issue. it sounds like the typical "air" leak in the tank, gauge sender or vent line.