The solo private pilot made a personal cross-country flight under Title 14, CFR Part 91. During an aborted landing on a beach, the airplane sustained substantial damage when it struck debris and impacted terrain. In a written statement the pilot said he didn't like the feel of the terrain during the landing, and added power to abort the landing. He said the airplane struck debris during the aborted landing. The pilot said there were no known mechanical problems with the airplane prior to the accident, and that the propeller and left main landing gear was damaged during the accident. He further stated that he should have looked over the landing area better prior to landing, and had a better exit plan. During a telephone conversation with the National Transportation Safety Board investigator-in-charge the mechanic who repaired the airplane, said he also repaired/replaced two nose ribs in the left wing's leading edge, and the left wingtip bow. He also replaced the damaged left lift strut at the owner's request.