I'm thinking of buying a small stump grinder and grinding small stumps as a sideline when it's slow or in the winter. I see alot of yards on my route with small stumps (6" to 12" in diameter). Does anyone do this along with their lawn business? How does it work out for you? What make and size stump grinder do you use? I'm looking at 6.5 to 13 HP Grinders. I don't really want to get into very large stumps....just the small ones where a large grinder would be hard to get at.