Because this forum inspired me I thought I would share my results.

I don’t bring my backer anymore since I have a sled that’s why fitment to the bracket was not a primary requirement for me.
I used fascia pvc board to make it water resistant and little lighter than wood.
It is a second season im using it. Im pretty happy with it except I wish it was little lither (5lbs empty)
I added a light on the button. it worked great while walleye fishing at dark but broke off at the end of the season last year.
I used a peace of noodle for ducer storage.
Glued some magnets initially for the skimmer but use it to hang jigs sometimes.

my next version will be 3d printed.

Thank you for inspiration and great ideas!