It takes me around 12 minutes with the stock system. My boat is a 2003 so it should'nt take you more because the system must have evolved.
From which part of quebec are you ?
I just bought a new Outback 2010. It is my first Moomba. I was wondering what was thew time frame to fill up and empty the 750 pounds ballast.
It seems that it takes forever to do both actions.