Looks like a lot of stump still left. Are you gonna cut it any-lower? I don't blame you about adjourning to the pool, and yes, you have to hydrate continually. I might try the cooling collar our son gave me at Christmas, and see how it works. I have a wide-brim hat, w/mesh 360 degrees in the crown, the ones with the tiny brass vents are better than nothing, but those vents wouldn't cool a flea. With the mesh hat, I can actually feel any wind pass-thru the crown. The traditional straw farmer's hats make my scalp itch like crazy.
My wife was complaining about the heat yesterday, I lowered the Bryant thermostat to 75, and that helped, I usually keep it at 78, and most days, that's OK. Yes, it's hot out there, I'm gonna go cut two lawns today before it gets to noon. At the Miami-Dade Co. house, that means picking up the mangoes from the yard, which fall to our side of the wall from our neighbor's tree; she also has a lychee tree. My wife likes them, caution is needed to eat only fully-ripe lychee fruit because of side-effects due to toxins in unripe fruit. If you've never had them, they are very-sweet!
https://www.britannica.com/plant/litchi-fruit