I have toyed around a bit and first went with a V-lock system and found a cutting board that would mount and fit like I wanted. I did some mod's to it.
It was ok and had the flexibility to mount overhanging the fish box, or turn around and hang into the cockpit which was nice on most days. But over time, I wanted something better. When over fish box, could only access fish box on one end and there were times we needed to get into both ends.
So, decided to make my own and mount to the fish box lid, like Grady does, but with some sides and larger with ability to drain over back of transom. Also would help to insulate, which I found made a huge difference holding ice just with one lid having starboard mounted flush.
Both my son-in-law and I have both found this latest one to be just perfect. Never in the way, easy to use and clean. Benefit of insulation.
What I did not want was a cutting board mounted and looking like crap with lots of knife cuts turning black, etc. So, I added a single thin piece of lexan as the cutting surface. It slides in just under 4 snap studs that are loosely screwed in to allow them to rotate. This also keeps the lexan in place so it can't blow out, yet easy to remove and clean up.
I sanded the surface of the lexan with 320 grit sandpaper with dual action sander to help it blend in. Hard to tell when it is installed.
Pics of before and after added.....was a fun project and have to say again, was way worth it!
Sorry, was not able to post the Vlock pic. Tried to redo it in jpg format and it for some reason will not work.