never played swim golf that way. sounds interesting.
the way we played at swim practice was on the least amounts of breaths you take on a 50yd freestyle sprint:
18 sprints x 50yds - start every 40 seconds
each sprint has a par - we usually went up to par 4 (just like its scored in golf)
sprint 1 - par 3
sprint 2 - par 2
sprint 3 - par 4
sprint 4 - par 2
sprint 5 - par 3
sprint 6 - par 1
sprint 7 - par 3
sprint 8 - par 4
sprint 9 - par 2
^^something like that.