Koos,

I am going to make a panel from 1/4" Starboard that will go over the plywood. This is because I mounted some other items on the plywood panel that prevent me from just expanding the cutout and mounting the replacement panel. If that was possible, it would be the preferred method. I made a mockup of the useable area yesterday and am doing a trial layout at home with the various items I have (DC Panel, 115VAC outlet, shorepower breaker, two 12V utility outlets, and battery charger). Once I'm ok with the layout, I'll cut the Starboard, take it to the boat and use a sawzall to cut where I need in the plywood.