H there! Does anyone have the Ledge Lounger Chaise Deep? The company is saying at least 10” of water is needed on the sun shelf , but my pool builder thinks the drop from the top of deck will be too much of a drop off for safety if the water is more than 9” deep. Any guidance? What is the drop down from your pool deck to the bottom of sun ledge and how deep is the water on your sun shelf? Thanks for your help!