well i am going to be getting about 75+ snow plowing customers for this winter. and the deal with them is this- plow driveway / shovel walk / ice control as needed. well what i would like to know is this. how much sand / salt would i need to cover about 75 or so small to medium size driveways, plus some small roads, and a small commercial here or there. i will be plowing with a ford f250 4x4 with a 7 1/2 or 8' plow. what should i be looking at for sand / salt supplies for 1 run, and what kind of sander? the guy tells me that he currently uses a tailgate sander. however that doesnt really seem like it would work to me. i could go and buy a big one though, however what do you guys think?