So I am about a week or two out from closing up my pool for the season. ETA: October 4. I see that you have to blow the lines out in order to close the pool and run antifreeze in said lines, however, I have a main drain in the bottom of my pool. 1) how do I get all the water out of that line to administer antifreeze to keep that line from freezing? Or do I? 2) I've seen multiple ways on here to blow out the lines and I'm not sure what would work best with my system. 3) I'm not sure I'm understanding that process fully. I've read the thread in Pool School regarding closing and it's too vague for me. Can anyone help?!