Most times cracks in the gelcoat are just that, I put the Tornado pic in just to show that it doesnt hurt to have a close look at cracks. I did a repair on the kids Arrow for a small delamination when I ground back the gelcoat and followed the cracks I had to chop out about 600mm from the bottom and inner sides. How do you know how bad a crack is without grinding it? If the inner tapes intact it would still hold air.
Jeff Southall Current boats Nacra 5.8 1703 Cant have two Ram Raiders at the same time so not named yet Nacra 5.8 1667 Ram Raider Nacra 18 Square Taipan 5.7 134 Arrow 1576