Dock Pole Cover

I created this simple dock cover pole for safety and I didn't want to pay the exorbant fees they charge for one. There are 2 types of covers on the market, steel and rubber. The steel one doesn't always work if the poles have been hammered into the lake bed (the hammering ruins the top and warps the pole - so it's difficult to use the steel covers). The rubber ones that are sold online or in stores are so think it's pointless having them. They also do not weather well and break down after a season typically. I designed this using TPU to give it more flexibility so that it will accommodate poles that have been hammered as well. Covers the pole tops so you don't inadvertently get hurt (sharps edges). I am planning to make the flat top more rounded but I would prefer to print without support but will see. The rounded top would be nice so the rainwater doesn't sit on top. I am not sure of the longevity of this cover printed in TPU outside in the elements. The dimens