Pool at 106 degrees?   Bummer.  I lived in south Florida for about 6 years (Pine Island) and after a year, installed an in ground pool only to discover that in the summer when you really wanted to cool off, it was too darned hot to get in.  Tried running the solar panels at night hoping that they would radiate enough heat to cool it off.  No joy.  Ice cubes didn’t work either.  Finally moved to North Carolina where it was only 104 today.  (But it is significantly cooler than Florida at night.) 

I live in Vegas and have never heard of a pool cooler.  Shade is everything here.  It makes a tremendous difference.  We are at 110 degrees today and thanks to my solar heating panels, I got my pool warmed up enough to swim in (85-87 degrees).  The morning temperature is usually in the high 70s.  That’s because my pool faces east and a wall shades the early morning sun, then after noon time the shade from the house and trees starts to cover it.  By 3:00 it’s mostly shady and the parts that are still exposed to the sun are noticeably warmer.  If your pool is completely exposed to the hot afternoon sun, however, I can see how the pool could get overheated.  Plant lots of trees around the pool or anything else that can put shade on your pool and that is guaranteed to cool it right down.