The final hull laminations are so important that they are repeated here. The final layer in your lay-up should be a chopped-strand mat … The extra laminations needed for the keel and other areas below the waterline can be added once the full hull laminate is complete.  If you have used an isothalic resin, for increased resistance to water permeation, it is advisable to coat all areas below the waterline with several layers of vinyl ester resin and fiberglass tissue.

   Experienced laminators, and this includes builders who have laid up their own hull, can apply a layer of the mat and a layer of woven roving in one operation.   The advantages are that the laminate can be rolled out and any previously formed irregularities can be eliminated by using firmer pressure on the high spots and a lighter pressure on the low areas, thus ironing out the laminate and resulting in an even surface.   Keep this in mind when installing your main laminate.

   Once your hull has been screeded and spot filled, sanded off and any surface tissue or finishing cloth that is required has been applied, you are ready for final hand sanding and painting.