Transom Repair 23' Outboard

[oldbluesplayer]

as the others have mentioned, with West Systems epoxy, you can definitely put polyester based gel coat on over it.

Keep in mind that when bonding to the existing boat structure, you are only acheiving a secondary bond, and that epoxy is considerably stronger at this, than polyester.

The primary bond (chemical) only occurs when the previous surface being bonded to is not yet fully cured - obviously, all the existing fiberglass structure in your boat is fully cured.

With the epoxy (at least with west systems) after it fully cures - about 4 days, with a good sanding, and an acetone wipe, polyester gel coat will readily adhere.

suggest, as Trayder mentioned, you get the West Systems book - it's cheap, readily available, good info.

Bill