On November 8, 1997, about 1135 eastern standard time, a Cessna 172P, N97074, operated by an individual as a Title 14 CFR Part 91 personal flight, impacted with trees during a forced landing following partial loss of engine power at Naples Municipal Airport, Naples, Florida. Visual meteorological conditions prevailed, and no flight plan was filed. The airplane was substantially damaged. The private pilot and 3 passengers were not injured. The flight was originating at the time en route to Marco Island, Florida. The pilot stated that shortly after takeoff, at about 200 feet, he had to "lower the nose" in order to maintain airspeed. He realized that the engine was losing power. The pilot further states that his altitude did not permit him to return to the airport, so he picked a landing spot about half a mile from runway 32. The aircraft impacted trees and touched down about 50-60 seconds after the loss of power. The aircraft was inspected and the engine was examined by an FAA inspector and the Chief Mechanic for Ambassador Airways. The FAA inspector reported that initial inspection of the aircraft showed damage to both wings and tail section. The windshield was "busted out" on the pilot's side. No discrepancies were noted during post-crash engine run-up. Further investigation revealed that the aircraft "could have been" 58 pounds over weight.