Good job Ed. I have to download this and try it out.
The 'building cost increases with the square of the size' idea was mine, and to tell the truth I didn't give it a lot of deep thought when I wrote it, it just came off the top of my head. SJ came up with the maintenance cost progression.
__________________
Have you ever had... the sudden feeling... that God is out to GET YOU?
Well, my girl dumped me and I'm stuck with the raftmates from Hell in the middle of the sea and... what was the question again???