How many thru hull fittings is alot for ballast system. I am re plumbing my ballast system so that when emptying it goes over the side rather than back through the bottom of the boat. I have a reversible pump system.
Right now i have 3 vent holes for the bags,and 1 for the bilge pump all on one side of the boat. I plan on adding two more thru hull fittings on both sides so that when emptying the water out of the bags it shoots over both sides. This would be 5 on the strb side and 1 on the port side.