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thank you all for the input. after digging through the paperwork I received from the original owner I found that I actually have the build sheet & blueprint of my boat from Boston Whaler showing all the locations & dimensions where the plywood is actually installed which does exist in the gun whales and elsewhere in the boat. I also have the original owners manual which advises against using the center console for mounting the antenna. It was my belief that everyone on this site had all that info thus my question of where's the plywood to dig into? If by any means anyone wants this blueprint and doesn't have it I would surely provide it. I showed it to my restoration shop which I have listed previously & he immediately solved the issue. Thanks!