Well for moon shots you just need to keep in mind a few things when at the design table. You don\'t need a lot of fuel or power to land and return all you have to do is get half way back to Kerbin and the gravity well does the rest, just keep some fuel for deorbit. Tall is bad, you want your landers shot a squat so that if you give it a less than perfect landing it doesn\'t go all tippy on you. My best landers followed the K.I.S.S. principle.