> I would love to build the Guillemot Expedition Single, but due to storage
> and building space limitations an 18' boat would be much more practical
> than a 19' boat. Would simply shortening the space between the stations by
> 0.5" to 1" result in an acceptable solution?

Yep. You can either do a simple scaling by decreasing the form spacing by 0.75" which would give you a 17'-10" boat, or you could scale as described in the back of Nick's book, which decreases the ends more than the middle, to keep volume more constant.

I'm planning to stretch a Guillemot to 18' (as that's all the storage space I have)

Shawn