Who Won the Belly Bowl??

I initially thought that using Princeton's lightweight women's time in the calculation of times for the Belly Bowl wouldn't have mattered (since corrected below), but an astute reader pointed out that my ciphering was off. In fact, if the lightweight time was used, as it should have been because that boat was the top Princeton boat, Princeton would have won the Bowl! This is Princeton's race, and they must set the rules, but they look silly this year. Again, if you don't have a separate lightweight race, how can you not count the lightweight boats racing in a heavyweight event when determining the winner of the Bowl?