Pretty much everything dejoha said. I don't particularly care if the ground is level or flat when I'm hanging. I can avoid the catabatic wind/air by staying out of valleys as well as avoiding the brunt of any bad weather by not staying on peaks. Site selection can protect me from the worst of the weather while properly pitching my tarp will take care of the rest. Carry enough water for at least a half day (including all cooking and cleaning needs) into camp each night. Enjoy the solitude and the aspiring views from the hammock.