I have a 16 by 31 intex pool. It is going on its third year. I always keep my pool full. All the way up to the top! I would like to install a thru the wall skimmer but i have a few questions. If i put a skimmer in what is the max level that it can be filled to? I hate the idea of lossing 4 inches of deepth. Also since the liner will have to be cut how long before this would start ripping out? I would like this pool to last for years to come. Thanks