Actually the tanks are for diesel, and I will probably do something on the interiors. Have decided to up to 14 ga and will definatly use the mig for the ms plate. As far as the stainless holding tank, not sure, but I found out ss flux cored is only available in large reels....to expensive for one tank.
Will either mig it or get someone else to tig.
As for the rudder, I'm going to go with a Schilling type rudder ( just have to try it...it's the way I am
) I will stick the 1/4 " top and bottom plates to the shaft, then probably mig the 1/8 side panels to the top and bottom plates.
Actually just got back from the water jet company, and the top and bottom plates are only $11 to $13 ea including material and profiling. Can't beat that.
Thanks again, and I will post pics when I have something.