Eddy,
I dont want to throw you under the bus, but the system doesnt come with a toggle system to fill the bags. The system is based on the overflow into the tanks. There is however a flow threw valve that you can turn on and off if you do not want to fill the entire ballast and just go stock.
Depending on the year of the Star you might have to reprogram your pump timing box to ensure that you fill everything in (necessary for 07 to current X Stars). But thats really not a big deal. We have all of the documentation on how to reprogram the timers to get everything working. We have put in a ton of these kits over the past few years. Its really not all that hard.
Coleman,
Here is the generic description of the kit -
http://www.waterskis.com/Custom-X-Star-Ballast-Upgrade-Adds-2500-Lbs-To-Fac-p/custom%20x-star%20ballast%20upgrade.htm One other thing to note that if you are putting in the kit yourself I would HIGHLY recommend getting a little extra hose. The way the kit comes originally is designed for MasterCraft not for you and I to install. Meaning that they put the kit in before the seats are installed in the boat and can run the hose a little more directly. Because you (and even us at the dealer level) install the kit post-build the extra hose saves a ton of time and headache.
We have a ton of experience with this installing and getting this kit to work perfectly in your boat. If its something that you want to get ordered up let me know. Also, if you have any other questions dont hesitate to shoot me an email.
John
John@waterskis.com www.waterskis.com