ballast tanks

[butter is good]

is there a way to put ballast tanks in an older ski nauti and if so with a thru hull fitting? any input on a alternitve to sacks and weight would be great.

[daniel]

have you heard about the leadheadz ? i think the homepage was leadheaz.com ... (type leadheadz in google)

[wakejunky]

U can usually just screw an aerator pump right into the drain hole and then you have a way to fill a sac while under way or not. Then all you have to do is devise a way to get the water out.
What I did was to run two pumps backwards to each other, the drain hole pump pushed water backwards through another pump "emptying pump" I then plumbed it such that I only had a tube coming from the gunwale to fill the rear sac and then I put a sac in the locker which I never saw. I put overflow out the normal bilge line so, that when the locker sac was full it just purged out the bilge line and I knew to turn off the pump.

Good luck

Chris

[Mikeski]

Use cooling water pickup

You can T into the cooling water pickup if you use an impeller pump. You should use a safety valve in case there is an emergency. Hey Chris are you wasting time here too??? MJ
Mikeski

[thutch]

I put a custom ballast in my 90 ski.. It's a big tank(~1000 lbs) that sits where the back seat was. I built it from plywood and then put fiberglass resin over the whole thing. At first, I tapped into the raw water intake, but decided after some overheating problems, that it was not the best way to do it. I now have a scoop installed using a thru-hull much like the Super Airs have now.. It works great and beats having to use fat sacks..I have one Rule 7500 to fill(In hindsite, I think I could have used a much smaller pump without sacraficing fill tiime). and 2 Rule 750's to empty.. the idea was to be able to adjust weight per side with water, but I've found moving people is much easier.