Anyone have experience cutting in new portholes for CD25

[JONESY]

Hi,
I know enough to be dangerous on boat restoration, but i am a pretty handy finish carpenter - so once i have the technique, should be in good shape. so here is the question. I own a beautiful CD25 in great shape where it counts, but its an earlier version, and i really want to "convert" it over with the bronze portholes.

it will involve filling in areas of fiber and gel coat as well as making other areas enlarged to receive larger bronze portholes (which i assume to be the relatively easy part -have a great little Fein tool that should make easy work of this).

Has anyone done this, or can folks offer me advice? much appreciated in advance.

Thanks