We need to replace our liner. I have been shopping around and found a good deal on one but it is a J liner (uni-bead) instead of the overlap style we had. I have been researching the difference and for what I can tell you can use this on any pool. Has anyone used this type of liner? Are there issues getting the liner smooth while it is filling? Our pool is 18 X 38 if that makes a difference. I am also checking into salt water instead of chlorine but you need to purchase some sort of a converter. If anyone has any input on that it would be helpful.