I know nothing about cowboys, but I do know landscapers, produce pickers, and construction workers. ( Oh and truck drivers.) I also spend a lot of time on the Atlantic coast. Wear something to cover yourself and yes, sunscreen. I had a roofer friend have bits of his face and earlobes hacked off and still had white patches on his forehead and arms.
My husband has ( had🙏) spots mostly on his left arm and ear ( the side near the driver side window.) VA freezed them off and we hope it's all gone.
I burn. I don't wear sunscreen,but I make a point of wearing hats and lightweight long sleeve shirts when I'm out for more than a few hours. Please take care of your skin. Even if you aren't vain about wrinkles, skin cancer is no joke.