Memphis marathon...1973??
I wish this one was in better shape. This is the start of the 250 mile (I think) marathon. That is Jeff out front in the Scotti from the previous pic. He didn't stay there long. He had tested with and was prepared to run his sprint gearcase. Leek suggested (emphatically) that he couldn't compete with the extra fuel weight and should change to the larger case like all of the other OMC entries. The sprint case was 10mph faster, but he changed it. The first black motor passed him on the back stretch, and one more every few laps. He was the first OMC at the finish, but well back overall. I can count 31 boats in the picture!
http://i50.tinypic.com/a1rdyp.jpg