Butts in the sand is one of my peeves too.
I watch smokers dispose of their butts in the sand and cover them up - just like a dog covers his turds.
At white Sands - where I stay, I see Leedon, the security guard, walking around picking up butts that smokers have tossed and it really pee-es me off. Leedon works hard enough without having to pick up after smokers.
But (no pun intended) I don't see this problem going away, most smokers do feel that the world is their ashtray.