I got 1/2 gal/coat for balto. I applied 4 coats over interprotect, then wet sanded. I think you would lose alot of coverage if you wet sanded after only one coat, unless their was very little roller "orange peel" affect. I used 1/8 nap foam roller, not 1/4. I estimate the hull area as .75*LWL*beam, or about 220 sqft. Another 25 sq ft or so for keel, 12 for rudder. Don't know why mine went so far - I drew it out pretty thin to reduce the wet sanding.
