After hearing both Rick and Rob... comment on "excess".  I did some more Godzilla studies to see just how much worse a strictly rectangular cross section might be.  While at it, I also added a wider range of speeds to the optimization... some to the conservative side, while others to the highly optimistic side.  Don't laugh, but even to 30 knots.  Using the LARGE loads required to get to 30 knots, I used Flotsam to check the static (conservative) down trim.  I've increased the bow's topsides for this trim and also to give some height for longer rudder moment arms and beam clearance. 

I've added the following three files to the My Little Mule folder.  (1) Developable square hull (2) Linesplan (3) Godzilla analysis and summary. 

To summarize the summary...

1. Compared to the last design, this one is 3% less efficient (8.4% less efficient than a fully optimized design)
2. For that I get a rectangular cross section with 4 sides with 90 degree corners.
3. Images do not show center conning tower for mast support. 
4. Front would present a problem if it dives... but I came to myself and said WTH... so I get wet.  I can always add some foam and contour it later.  It is a test bed.

DelftShip image showing Developable Lee Hull

http://au.groups.yahoo.com/group/harryproa/files/My%20Little%20Mule/DelftShip%20Leeward%20Hull.jpg

Linesplan

http://au.groups.yahoo.com/group/harryproa/files/My%20Little%20Mule/Leeward%20Linesplan.jpg

Godzilla analysis and Excel Summary

http://au.groups.yahoo.com/group/harryproa/files/My%20Little%20Mule/LeewardAnalysis.zip