In light of its measly $1.2 million price tag the film's quality relative to bigger-budget horror films is striking.
It depends on the size of the pool. A normal size pool should have at least 2 skimmers. It depends on the size of the pool. A normal size pool should have at least 2 skimmers.
I have a 12,500 gallon kidney shaped pool with the skimmer in the deep end with two jets one in the deep end across from the skimmer and one in the shallow across from the stairs. I find that aiming the jets parallel to the surface helps. Especially if you use a barracuda (pool cleaner).