I have an Intex Ultra Frame 18'x48" that has two of these suction ports on the side. I do not use them anymore because I installed a Hayward skimmer. Currently, I still have the flex hoses coming from these ports to a valve to keep things shut off/leaking. Is there a way to plug/close these ports with some sort of fitting that makes them non-intrusive on the inside? Currently I have the water level just below these suction lines for winter. But I'd like to remove their suction screens and plug them somehow on the outside of the pool. Any tips?