Been there, done that --- and got to meet the Marines!! Stuck WOT, first plane, Just got PPL total experience 74 hours. Time in Type 2 hours (PA28-180). In retrospect, it was a good experience. At the time, I was young, inexperienced and a little scared. Anyone who's been in a difficult situation knows that you don't typically think as clearly or quickly as usual, but I knew there was no way I was going to cut the mixture and try to land at my home field with a 2500 foot runway. I had no idea when to cut the mixture, and no idea of gliding characteristics. Got my mechanic on the radio, and he advised me not to try and force the throttle closed, as that may create worse problems. Somehow I did think clearly enough to recall an airport with 10,000 foot runway close by my home field of Leonardtown MD. Called the tower at PAX RIver (Patuxent Naval Air Station), declared an emergency, they cleared the airspace, and I spiraled down to Runway 14....someone from my home field got on the tower frequency and said "don't land on the first 100 feet!" That was never a consideration, as I was not going to cut the mixture until I was close to the threshold (Later I found out that they have an arresting cable on the end of the runway to practice carrier landings). Plane glided quite a ways (of course a mooney would have glided much further!), total non event until I stopped on a taxiway. Lots of trucks, soldiers, and questions, before they were satisfied that this was not a terrorist operation (they recently got the first Tilt Rotor V22's and had other hush hush projects I imagine). The plane was searched by several marines, and no one was deterred by my name dropping my Admiral landlord and former PAX commander (Don Becker, flew A6's back when). Eventually they realized I was an inexperienced private aviator who declared an emergency and treated me to a very interesting and fun visit to the tower, and some minor paper work. Problem was mechanical fault in the carburetor.