Confused how all of this works. I bought a vacuum and hose a few weeks ago and thought I knew what I was doing but after a little reading it appears I don't. I have been putting the hose in the suction side of the skimmer which I noticed doesn't fit all that great. I do not have a vac plate and didn't know I needed one. I also assumed the main drains at the bottom of the pool sucked at all times until this weekend when I finally swam down and found no suction. I have been sweeping debris down to them thinking they would suck it up but nothing happened. So what is the correct setup for all of this? My skimmers do have two holes but I think one of them is capped or closed. There is a flap in both skimmers but if I close the suction with the flap the pump grinds.