> I used wider strips on another design and experienced the problem you are
> concerned with. My solution was to plane a few strips down to a narrower
> width where a tighter radius was needed. You will then have a few strips
> with flat edges glued together, but that should not affect stregth or
> appearance if well done. Some builders build entire boats out of flat
> edged strips - it takes longer to plane the rolling bevel needed on the
> curves, but you may be able to mill your own strips this way and save even
> more money.

You can also add tapered strips to straignten the curve. Or you can change the direction of the strips. I built a canoe with curved strips down to below the chine and then changed the run of the strips to be parallel with the keel. This avoided building the flat bottom with tight bent strips.