I am in the process of installing my pool and the one thing I am unsure about is installing the Ladder Anchor Sockets. This is a inground pool and I purchased some Brass 4" anchor sockets that are Perma-Cast Brand. Is there any specified distance or how level they need to be. I realize they should be flush with the concrete deck. I saw they come on channels as well does that help any?? Any advice or pictures would be very helpful. Thanks in advance.