The pilot noted the windsock was indicating nil wind and he elected to land on strip 36. The strip is 800 metres long from fence to fence but there is a powerline across the northern end. At the landing flare the aircraft floated and touched down about 200 metres after the threshold. The pilot noted the aircraft did not seem to slow down as expected, but due to concern over the powerlines at the far end he elected not to go around. The aircraft continued on the ground roll and the pilot was unable to prevent it from running into the fence, at low speed, at the northern end. Significant Factors The following factors were considered relevant to the development of the accident: 1. The pilot did not make a timely decision to go around.