THE PLT ATTEMPTED A PRECAUTIONARY LDG AT A PRIVATE GRASS AIRSTRIP HE HAD LOCATED, AFTER BEING ADVISED OF WX AT HIS INTENDED DESTINATION BY ATC. JUST PRIOR TO TOUCHDOWN, HE OBSERVED A BALLOON AT MID-FIELD AND EXCUTED A GO-AROUND. DURING CLIMBOUT, HE LOST SIGHT OF THE FIELD AND CIRCLED FOR SEVERAL MINUTES AS THE WX CONDITIONS DETERIORATED. HE SUBSEQUENTLY ATTEMPTED A LDG ON A GRAVEL ROAD WHERE HE OBSERVED WIRES IN FRONT OF HIM; HE ADDED FULL PWR TO GO-AROUND AND THE AMPHIBIOUS ACFT MISSED THE WIRES TO THE FRONT, BUT A WING STRUCK A UTILITY POLE GUY WIRE. THE ACFT SPUN AROUND TO THE SIDE AND CAME TO REST NOSE-UP AGAINST A UTILITY POLE. THE PLT TOLD A STATE TROOPER THAT HE HAD ATTEMPTED THE LDG BECAUSE HE FELT HE WAS GETTING LOW ON FUEL. LATER EXAMINATION OF THE ACFT REVEALED APPROX 2 GALS. OF FUEL ON BOARD. NO EVIDENCE OF LEAKAGE WAS FOUND. THE FLT ORIGINATED AT SALISBURY, MD AT APPROX 1135 EDT.