Nice work on the deck/pool.
I think you probably already answered this but how do you keep the water from getting super hot? Does the waterfall/circulation keep the water cool enough? Dump in a couple of bags of ice when you want to "Chill"?
So far it has been just having umbrellas up and running the filter pump at night. I will occasionally pick up 100lb of ice and drop it in if I want it cooler (maybe once a month). It does respond immediately to cooler weather though.
My hope is that now that the external shell is not exposed, it will stay cooler. Also, I plan on getting a reflective cover (when I say cover, just one that floats on the surface).
I do have plans for it that involve a 50 gallon ice chest, a heat exchanger from a heater, some plumbing and frozen gallons jugs of water. That will be done next spring for next summer though.