Fishing rod rack

I'd use a couple boards with the bottom one 1/2 thickness with about 1 in bore, or slightly larger than the largest butt diameter of the rod. The top board would be drilled with about 1/2" bore through and cut open to the edge. Mount both apart from each other so all rods are secure. You could also tilt the bottom board so the rods would tilt toward the back of the top board.