In over 20 years, we have always used straight salt. With the impending salt shortage, we are going to experiment with mixing in anti-skid sand with the salt. Any thoughts on proper mixtures ?? Our local DOT mixes it 2/3 sand and 1/3 salt. We were hoping to go 50/50 or maybe 75% salt/ 25% sand. Your thoughts ?? Also.... we have all truck mounted V box spreaders. Any hints on setting the spinner speed as compared to straight salt ? Should the hopper door be more wide open than with straight salt, or more closed ?? Your thoughts, input and advice are welcome and needed.