ALL of my fresh water lines have been replaced as of last season. I went with reinforced clear plastic tubing from the ACE hardware store I frequent. Also acquired were a handful of brass male/female garden hose couplers with barbed ends. In the fall, all couplings are opened and the water drains into the bilge. Made up a short piece of tubing with a fitting on one end to attach to the pressure water intake. The other end goes into a gallon jug of RV antifreeze that draw up pumped to the hoses that were in areas that couldn't be accessed for a break apart fitting..