May I suggest an alternative? 1/4" is heavy and glassing it in is heavier. Perhaps if you glassed in "bolt receivers" every foot or so that allowed a half-inch standoff. Glue in closed-cell foam, and then glue and screw veneer or battens over that. Make channels for wiring as needed...a little planning and a couple of "dummy runs" will allow for new mast gear, lighting, etc.
This might make a lot more sense than 1/4" panels, and the foam will make it quieter and cooler down below.
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