Magnetic Bait Cutting Board For Hobie Kayak 8" Hatch

When fishing for salmon - like many people - I routinely use frozen "cut-plug" herring or anchovies for bait.
In the past, I used the surface of my front hatch for an improvised cutting board.  It worked, but it did a lot of cosmetic damage. So once again, I came up with an invention only I will probably ever need and, it really isn't necessary for me either. But hey, I have to justify all the money I spent on my CNC router.  Also, making stuff is fun! 

Like the rod holder mount I did earlier, I made a template with the pen holder so I can minimize HDPE waste.  For this particular project, I wanted it easily removable and I did not want to drill any holes.  I am no naval architect, but from my limited knowledge, the less holes in a boat the better.  Therefore, I got 8 neodymium magnets - 4 for the cutting board and 4 for inside the hatch.  I took measurements of the hatch with my trusty caliper and metric ruler (because I like easy math) and drew the project up in Fusion 360:


Then I printed out a scale template to be sure the magnets would not be placed where the hatch support structure was located.

I cut out and pocketed the cutting board and pressed in the magnets then tested it out on the kayak. The test is at the end of the short (3 minute) build video.