Hi guys new to the forum here. Seems like there is a wealth of info on this site. A lot of helpful people here as well from what I can see. Thanks for having me. Well on to my question , I order the Hayward sp1091lx skimmer from Amazon cause my boss did the modification on his Intex pool and he said it's working great. I never liked the over the wall skimmer so I bought one too. Now my question is do I need to drain the water down under the intake level and trace the cutout and cut the vinyl or do I need to cut the gasket in half and mount the skimmer then cut the vinyl? My boss couldn't remember how he did his and I have looked everywhere trying to find a solid answer . I would think that either way would work but I just want some advice from the pros. Thanks in advance