Near Jacksonville Florida. No heavy freeze (it has been 50's and 60's). Pool was not even drained all the way down as best as I can tell. He did not pump very long. Was trying to get it done before Christmas. He did next door neighbor's pool a few years ago, no problems. He even remarked he knew (before he started) the groundwater was very high because of his experience next door, as opposed to another house in the neighborhood about 1/2 mile away which was dry. He pumped for maybe one day, with the end of the hose maybe 20 feet from the deep end dumping into my yard. Last time it was done, 12 years ago the guy had to pump for a week with two pumps, and set the end of the hose near the street. This guy put in a new drain cover. Obviously, with a pool full of muddy water (can't see even past a few inches) I have no idea what is going on in the pool, although I can see brown dirt on the bottom of my highest step. I ran my Tigershark filter unit through the pool, came up with brown mud. I backwash the filter, it puts out chocolate brown water. Should this guy drain the pool, clean the liner, and start again??