just do what you can (sun screen, gloves). sounds pretty unavoidable. Up your antioxidant intake (vit E, selineum, etc...) to help combat any free radical damage.
Just keep track of what looks normal for your skin. If you see anything with 1.) a weird color 2.)growing quickly 3.)irregular boarders or surface, then see a dermatologist pronto. If you catch it, then it's easily removed and little concern for spread.