Last season at Yellowstone, my buddy's camping kettle had a weighted, flat bottom that stayed put on gravel. I read in an outdoor magazine that a wide base prevents most tip-overs. @jakeb73 is right to ask about the base shape because round bottoms are super unstable. Some kettles add silicone rings or non-skid pads for extra grip on rocks. My old one wobbled constantly until I got a model with a broader stance. Now my boiling water doesn't end up in the fire pit.