Trunk Ballest
I have a 2001 Mobius Pro.
I too had the same idea for more weight. I ended up removing the plastic floor the factory puts in the trunk and installing a wood floor. I used one eight foot 2x10 and one 2x6. I layed them on top of the gas tank side by side with some carpet under them for a cushion. I also carpeted the top for looks.
As for the weight I did some creative plumbing off the factory auto fill. I put a tee and some valves in. I added two tanks to the trunk and kept the factory tank under the seat. All three tanks fill at the same time if I want them too. I purchased two extra 750gpm pumps to empty the extra tanks, again some creative plumbing. Right now all three tanks empty out the same port. It is a little slow so I plan on adding two exit ports for the additional tanks to empty. It is worth it! The wake is huge! If you are interested in some pictures I can e-mail some.
Bruce Fuerstenberg
Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting...holy shit!...what a ride!