[bolger] Square Boats and Rocker

The square boat concept is that of sides with no flare. Sections are box like
or square, correct? So the design of these boats show panels with rocker
built in by curving the side panels, also correct? So what is the effect on a
boat of say, 16 to 21 feet in length with no flare and bo built in rocker?
Perfectly flat bottom.

Mike Masten