I had an outdoor career and live at 5,000 feet. I grew up on boats. We did not know anything about skin cancer in the old days, but we do now. I wear long sleeves even in summer when outside. I use sunscreen every day in the summer. I discovered wide brimmed straw and felt hats in 1973.
Now I still got out all the time but hide from the sun. I have heard the clank of parts of my hide going in a stainless steel dish many times. Most of them have been on my back, one on the upper arm. It is just plain stupid to go outside without a hat. The skin cancers on the top of the head and the face are the worst.