For your consideration is a new in the bag Ultimate Compensator for inground pools. It will fit any skimmer fitting and is designed for those who don't wish to lower the water level in the pool.
Simply turn bottle into skimmer until snug. Then make one more turn. There is a cap on the top to use to blow out your lines.
Please email any questions, I answer all within a day! See my other listings for more of your closing needs...If you don't see it I probably haven't gotten to listing it yet!
Thanks for looking!