
Hello bsjeep! We used to live in San Diego County...it is so beautiful there! I am happy you are able to put in a pool because it is the perfect place for one.
When I saw your post, I realized your pool is very similar in layout to ours.

We have a spa that is about a half an inch from the waterline, and the water flows over it beautifully. We love it! We don't have a pool cover, but if we did, it would work out beautifully. Here are some pictures of ours, that maybe will help you see how we had the spa done. Our waterline is at about 3" from coping. The spa is about 1/2 inch higher. It is subtle, but works and looks great. If you are within a half inch or so, the water will flow nicely(of course, depending on how many cannon balls are done throughout the day to take some water out! Ha!
I love your design and can't wait to see the finished product. Wish we could have done this when we lived in beautiful CA, but now we are trying to make TX have a taste of CA. Just bought some bouganvilla to add a little Southern CA to our atmosphere.

Best of luck to you on your build!
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Lol...I am so sorry! I obviously do not know how to turn the photo right side up...I will try to post another. Oops!
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Hoping this is better!
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Oh my goodness, I am really sorry...I am going to have to work on my photo taking skills and posting skills, too! I am really sorry.