Seems silly to ask but...you say chip away. You mean take a hammer and chisel to it and Strike off any bottom paint and glass that doesn’t fight back to stay with the boat and then start repairing from there?My advice is to lay bare the areas of concern so you can truly appraise the condition. The glass is only abrasion resistance and the wood is the hull structure. You have to restore the waterproof integrity of the skin. So I would chip and grind away the glass till you have a spot where the entire perimeter edge of the glass is unequivocally bonded to the wood planking. If you continue to find delaminated or damaged glass more than 12” from the initial starting point, you may want to assess continuing to remove glass skin vs. epoxy injection to fill the void and trying to rebond the skin.