Filling a hole in floor of fiberglass boat

[greenhornet73]

I removed the steel plates covering the old mounting areas of where a t top used to be mounted on my boat and found a hole below one of them.  The base of the new t top will set right over where this hole is so I need to repair it first.  Can I use Bondo glass filler for this or is there a better method to use? The hole is about 1/2” deep and 3” wide. The material below the hole feels pretty solid.

[sherman brown]

I would fill it with jb weld and forger about it.

[MINNOWNITE]

If you want to fix it properly watch Boat Works Today on youtube. Teaches you step by step to do almost any repair

[greenhornet73]

Great thanks I’ll check it out today

[jth21usa]

Can you cut is out, use plywood and reglass?

[garrymny]

It's probably plywood, with fiberglass over it. Easy fix. Remove rotted area of plywood. Replace plywood. Sand the area for good adhesion. Re fiberglass using a repair kit from AutoZone or home Depot.

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[sherman brown]

they make a body filler for auto's that has cat hair mixed in it. a friend had something bounce up a knock a hole in his bass boat. he used it and used the boat for yrs and it worked as good as the original hull.

[Captsmate]

Fill holes with epoxy an screw down a 1/4" piece of starboard the screw down ttop