By the way you can chase the cracks back with a Dremel and then use gel coat paste to patch it, but you might not get a close match in colour. Or just ignore it.
They're tough boats, enjoy.
Is there any sign that the damaged goes deeper than the gel coat? Does the hull flex and creak when you apply pressure there
£850 may be OK with a good trailer, trolley, cover reasonable sails and all the gear working.@Kelpie Thanks for the advice! Its going for £850, so not crazy money. The hull seems pretty solid when I give it a poke there.
There only are a few mm of substrate!The star cracks are from an impact. If it seems rigid enough then maybe OK,
Chasing and filling the cracks won't work, they will come through. You have to grind off the gelcoat, and the substrate a few mm until the cracks disappear. Then replace the mat/resin, then gel coat. Very difficult to get a perfect match, but at least it's white.