Kayak paddle holder

I bought this kayak paddle holder (black) from Canadian Tire and it broke at the first use (split from the bonding line). It is molded in 2 pieces and bond together. I modified the design cut the opening bigger for screw easy access. It works beautifully. It is printed in a piece therefore it won't break like the last one. Printing time about 7 hours.
Have to use flexible filament, PLA or ABS won't work.