: build a guillemot 17' with 21 inch beam. love design and handling
: wwould like to build another but with a min 27 " beam.
: tendom would take care of beam with but would lose
: sleaknness!!!! any idea how to modify etc? I'm a short heavy man
: at 5'8 240# need the width.

In boat design terms that's a massive difference. You are talking about a completely different boat built over a completly different set of forms. And there's no way a boat of 27" beam is going to be "sleak". It is what it is.