Super Jet Foothold glassing question

Finished up laying glass and sanding as you can see. Just wondering if I should add some epoxy to the area I'm pointing to since there are small small holes I don't want water to enterImageUploadedByTapatalk1353518484.250316.jpg
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Is there only one layer of glass? I used a couple layers of glass when I did mine and they've held up solid. I'd put another wider layer of glass over that.
 
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