Me again

: underneath the cloth in places where seams formed a 'valley'.

Prior to sheathing I spent alot of time filling those little seam valleys with woodflour thickened epoxy, letting it set. sanding it. Then filling in the ramaining little holes with more thickened epoxy ... I spent quite a bit of time doing this. When it was looking good I rounded all the seams with a long fairing board (you can sand a wave into a good seam/chine easy as pie if you are not carefull. Long smooth sanding strokes are required here). Then I glassed.

Hope this helps.

Pete