I'm 69 now, and LOTS of damage from a life in the sun. I've spent a LOT of time with my dermatologist; freeze treatments, lotions, blue lights, biopsies, etc. No MOHS yet, but I'm sure it's coming.
So a Coolibar wide brim, solar sleeves, sunscreen everywhere, AND an reflective umbrella on the Clicgear on hot, sunny days. I don't have any hesitation about it, though occasionally I have to remind somebody who is using a golf cart that they aren't exactly toughing it out. That usually does the trick.
Go out in the yard in July and see if it's cooler in the shade or in the sun. Then test again by spending 4 hours in the sun, vs. 4 hours in the shade and report back.
Screw the guys making jokes about ball retrievers and iron covers and all of that. There's no moral high ground here; only issues of heat exhaustion, dehydration, and skin cancer. That isn't complicated.