Advice on fixing minor deck damage

Hello all, I am looking for some advice on how to repair what looks to be some minor damage to the top of a Laser deck. The top section of the mast broke above the collar and came down during a race, damaging the top layer of the deck. I have removed the damaged pieces and now have what you see in the attached image. The deck around it still feels solid and it looks like the damage only went into the core, at least from what I can tell by looking at it. Should I be looking to just fill this...

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