The biggest problem with PVC Liners and water is getting the Jack Plumb. The very best way and believe me I have pulled and replaced many a Jack, is to use a PVC Boot. They fit closely around the Jack, there is no issue with floatation. They are easy to put on and easy to align the the Jack, and perfectly Code Compliant.They encase the Jack with a fairly tight fit and there is no air between the material and the Jack. These work great.
