: I am building a Chesapeake double kayak. The cockpit bottoms have
: been reinforced with an additional 4mm Okoume layer as I will be
: putting in Hobie pedal units. The inside is already glassed per
: instructions.
: The plans call for one layer of 6 ounce glass on the outside. If I
: use two layers of 4 ounce glass, will I have at least equal or
: more strength? I will put an additional layer of 4 ounce on the
: keel whichever way I go. I have plenty of 6 and 4 ounce cloth.
: Thanks
: Randy

If you wish to make it tough and heavy enough for your local swat team
to use as cover you could do that.

I'm surprised Chesapeake calls for 6 oz. glass, but I guess it's more available
and will make the boat bullet proof AND heavy.

The plywood itself is plenty strong and I remember when they first came out,
they were only coated to make the plywood waterproof. I guess builders found that
epoxy alone didn't provide enough abrasion resistance and glassing increased
both abrasion proof and water proof-ness.

One layer of 4 oz. glass should be plenty do both and keep the weight lower.

Rob