Masochism left over from trail crew days, Willie.
I try to get them to pay for a flush cut and bury them with mulch or soil, as possible.
I have to get a battery isolator and second battery, maybe a second alternator for my chip truck winch, then I'll have some pulling power, 12K.
The three guys in town with big grinders have removal services/ arborist services (at least two of three seem to be cheaper bidders with rough crews). I don't want to lose customers by subbing to them. Occasionally, they are inaccessible stumps where an Alpine Magnum will work. We have a lot of glacial outwash here, so rocks. I think it will kill an AM or your have to dig around the stumps anyway. I think AM are actually made here, actually.
My grinder is old and 25 HP. I still haven't fixed it/ gotten it fixed. Making plans to hire a friend to fix it, and thinking of trying to sell and putting money into a Wraptor. Maybe I"ll reconsider selling it. Dunno. There doesn't seem to be a way to make money at stumps unless you have a big machine or an inaccessible stump around here, where they homeowner really wants it gone. The next small stump is against a sidewalk. Occasionally its one large rhododendron stump (so a small stump) or the like, while doing a bunch of tree work. I already carry some basic excavation hand tools, and could throw in a hi-lift jack or whatnot, in addition to a few more hand tools and the sawsall.
I have been wondering how big/ small of an air compressor you need to do light air excavation. Could it be trailerable and 110v? I'd like to test the waters/ market with a shop built air tool before buying an air spade and having to rent a high power tow behind compressor. Rentals are so frequently a PITA. Rental grinders are always dull and 25 HP vermeer 252's or worse.
And employees are involved in digging.