Laying chopped strand over ENTIRE boat hull? - Boat Design Net

So I'm considering something which I've not really seen done before (though I'm sure it has been done, many times). I'm considering grinding away all of the gelcoat from a small 16' skiff, getting down to bare glass and laying new CSM down on the entire bottom of the hull.

The stringers on the skiff were blow out and I think it was ran for years with virtually no structural support. There are hairline cracks throughout the bottom of the hull that go INTO the laminate (i.e. all the way thru the original gelcoat and into the glass).

I've already rebuilt the stringers and the boat is flipped over now for bottom repair. I was only planning on laying new glass on the sections directly below the stringers (this is where the cracks are the worst), but upon seeing that there are cracks all over the hull I am considering adding large sheets of 1.5 oz chopped strand with poly resin down over the entire hull bottom to stabilize the stressed skin layer, and sealing with gelcoat.

A couple questions/concerns about doing this.

1) (most important question, obviously) Is this a stupid idea?
2) Should I be concerned about the new CSM delaminating down the road?

I know typically this is NOT something you'd do when re-gelcoating/painting a hull bottom. But like I said, given the hairline stress cracks that go into the fiberglass I feel the hull could use some stabilization/re-enforcement.

Thanks in advance to any responses and advice

Thanks for the great replies and advice everyone by popular consensus I’m opting not to lay new glass. I figured it was very excessive, guess I just needed some additional opinions to verify this.

I will probably still lay narrow strips of new glass over the worst parts of the cracks, but this is only along the outer edges of the hull bottom and keel. Rest of the hull I will just sand down like normal with 80 grit and reapply about 18 mils of fresh gelcoat. In any regard, the new stringers and repairs on the inside should stiffen up the hull tremendously to prevent further stress and cracking. That’s the hope anyways.

I probably will use 4 oz cloth with a layer of 1.5 oz CSM overtop for easy sanding. I've got loads of usable glass in the garage so I'll just use that.

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