I currently plow a couple of smaller parking lots as well as 8 residential driveways, constantly adding more all the time. Last year I had a period of two weeks were my truck had electrical issues(starting/charging) but luckily we had a lull in storms. I don't want to be down a truck and am considering adding another. I currently plow with a 74 Dodge W300 dump powered by an 89 stock cummins/727 auto with 4.88 geared dana 70 axles from and rear. Has a 9 foot fisher, 8 foor wing(I have off until needed), central hydraulics etc etc. It plows fine but is better suited for roads and larger lots, not gravel driveways despite being long. If I had a 3/4 ton or one ton SRW I could probably plow faster, not that I like to beat on my stuff, and have my son plow if I continue to add accounts. When do I know I should add another truck and when should I just keep investing in tools to fix the one I have, keeping things simple. Wow that was long winded.