advice for repairing daggerboard?

been trying to search for tips for repairing daggerboards but only seem to find info on repairing finishes. I have a daggerboard with damage from hitting submerged rocks and want to repair it prior to sailing this year but need some advice on products to use and if any advice on the procedure that would be great as well. attaching a couple pics to show what I am up against. Thanks for the help
Thanks