Thats not really a difficult problem to resolve. FlyHigh's systems integrate into the stock ballast system and take minimal alterations to the vessel. When installing the system on my x2, I only had to drill holes for the three way valves to make them easily accessible, otherwise only a heat gun, screwdriver and a little elbow grease was needed. Their kits had everything needed and a few extra feet of hoses. Worth the few extra bucks.
To save a little money, you can buy all the hoses, one way valves and three way valves from somewhere like west marine, then buy the sacs and fittings from FlyHigh. Study their diagrams and make it happen.