Shy,
I did this design in Bearboat. Its easy to use and easy to output. But still lets you have reasonable control and provides useful parameters and stability curves.
Also transfered it to Deftship/Freeship... Lots more control, and neat faring information, but getting an output is less straightforward and convenient for me at the moment.
Rolf,
There is in fact more "flat" in the bottom than is apparent. A portion of the midships bottom is totally flat due to my constraining the draft to be no more than 4". So its not as "round" as many think. The flat starts with the fourth section and widens out to about a foot by midships. Fairly broad since its only 23.5" wide at the waterline at midsection.
Your tweaks look pretty subtle to me, but I do see some variance. To me it looks as though the entry is a bit finer/sharper and the more midsections are a bit fuller higher up and slightly more elliptical below the waterline. More traditional in shape. But as you may have guessed I'm not necessarily tied to "traditional" although in some areas I like it.
I've been playing with the design and looking at the 'effects' in the theory side for about 5 years. Using KAPER, stability curves, etc... There is surprisingly little calculated difference in subtle hull shape variations, doing things like you've illustrated. So I went to an extreme with the design, trying to have full 'U" shaped sections forward and more "V" shaped sections aft to see if the variations that don't show in calculation do really make that big a difference in feel. I was also seeking to keep a fairly strong flare in the hull to help shed waves/spray, without making the hull too wide for easy paddling.The other thing is this hull is quite asymmetrical, which I may have taken too far as well. My understanding going too far with the asym thing can make a hull thats very trim sensitive.
But I wanted to do this and learn from it rather than just build someone else's design. At least partly because until Placid came out with their Rapdifire, and Steve Killing/Bearmountain announced their Freedom Solo 15'3", I hadn't seen anything that looked close to what I was looking for.
Even if the hull is a total failure in meeting my design goals it'll still be a big success in teaching me a lot about the subtle aspects of hull shape. Mainly after years of doing the theory and trying to sort out an inexpensive quick way to build hull prototypes I figured its time to actually try it out.

Put my butt where my mind is ... or something like that.

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Quote:
So many projects, so little time..