In the best interests of your propeller….
When operating on a gravel/loose surface always try to keep moving with minimum power - ESPECIALLY with a tailwind. Try to make all turns into wind - again using minimum power. Try to avoid stationary runups - ESPECIALLY with a tailwind. Try to maneuver your aircraft so that you will be starting into wind.
A while ago I observed a light twin turn to line up through a tailwind on a gravel runway. The whole aircraft literally disappeared in a cloud of dust as the wind came through the rear quadrant. A little bit of situational awareness goes a LONG way with regard to prop care.
IMO it is good airmanship to employ these techniques on any runway, sealed or un-sealed. You might get away without giving much thought to it, but it doesn’t look very professional and I wouldn’t want to be the poor bloke who has to pay for the prop overhauls!