I am new to the forum and just completed the build of a new in ground concrete/gunnite/Pebble Tec pool of about 10,000 gallons in Naples, FL. Looking at the pool after it was filled I noticed that the builder installed the light/bubbler on the sun shelf...but not the umbrella holder that is on the plan. So when I asked him, he said “oh we never install that until the end and will do it next week”. My question is will this do damage or harm the integrity of my new pool to somehow permanently install an umbrella sleeve now after the pool is full of water? I am assuming it is either bolted down or a hole is drilled into the concrete sunshelf for the umbrella pole, is this correct? Would you do it after the pool is full of water or am I missing something? Thanks for any responses!