ECAC Snubs Lightweights

Reading over the ECAC announcement that Princeton won the Boathouse Sports Trophy, I noticed that Princeton's lightweights weren't even mentioned when the school's results were discussed. It's as if they don't exist. This led me to look at the results for Eastern Sprints last spring. Lightweights don't count in scoring for the Willing Points Trophy. Novice fours count, for goodness sake! I don't know if lightweights count for the men, but I'll guess they do since they were listed in Princeton's results in the ECAC announcement. What's up with this?