I have a small sinkhole in my backyard. On about 3 feet of fill is a rotted tree stump...I dug on it all weekend, but it's BIG. The question is, do I rent a jackhammer and get the satisfaction of beating it out of the ground, or do I pour two bags of quickcrete on top of it and call it day? You have no idea how bad I want the jackhammer option...of course, then there's the 'fantasty dynamite option'....It's as bad as that "oh hell no" moment when Jay or Charlie passes you on the track....