MISkier has the old-time loops correct. For a while, the AWSA even had 33 off, as it was recognized the step from 30 off to 36 off was a big one. And, in the Back When, you couldn't opt up, but had to start at the base speed/line. When Warren Witherell scored about a zillion points at the 1960 Bay State Open, starting probably at 24 mph with 75 foot line. Think that he ran something like 14 complete passes, plus a few more buoys. Although, that wouldn't have been all at one time; as you ran 4 complete passes, you came in, and then went out later to compete against the others who had run all 4. More differences, of course, such as foot-dimensioned course, likely not surveyed. 8 points per pass, as the gates counted for a point. Long endgates at the same spacing as the buoy-to-buoy space, which was 135 feet at the time (45 yards). And top speed for Men was 34, not 36. The current metric dimensions with AWSA would have started about 1975. I believe that the World Rules always had metric, and did not have the 23m longline. One of the big differences then, along with not allowing left-hand jumping.