Well my 98-26x has been in the ocean now since Aug 2020. My daggerboard won’t drop. So far that’s all I’ve had issues with. I do regularly scrape the waters edge of mussels that seem to love to live there. My one concern, that I’ll be looking into soon, is marine growth inside the ballast tank. My valve doesn’t seal fully and I’m a bit worried it’ll be full of some sort of marine life forms.