3d printed planer board (can you help me improve it)

[duofish]

I made some improvements.  Better clamp since I broke the last one. I added a slot to add weight and tune the board.

Have you considered The adhesive wheel weights they use on aluminum wheels. They are flat and can easily be cut to size and the paper on the back peals off to allow the adhesive to stick to anything. Looking at your design I think they would be the cats meow for you. you could check them out at your local truck stop.