Trailer question #2 Shield?

I am only using my trailer in the summer months, should I add the triton aluminum salt shield? I am just thinking of rocks and debris? I only drive on gravel to get to the trail for about 3/4 of a mile, and I drive very slow because I hate gravel chips on my truck. It also takes me about 1 hour just to reach the trail. Would it even be worth me putting the shield ok on the trailer?