Closing pool for first time. I'm in the Northeast, so it freezes here. From the pad, I've blown out my return jets. I've also blown out my skimmers and the vacuum line. I've plugged the returns, vacuum line, and skimmers. There are no bubbles coming from the main drain. When I turn the valves that are for the skimmer, vacuum line, and main drain, they don't seal it off. Now I am stuck and don't know how to proceed. I am using a shop vac. Thank you for any advice! I really need to close this thing up today!!!