Thanks for the reply but it really does not help me.
I will be by myself in a 23 ft Grady White. I understand the eastbound trip, where you are descending, is relatively easy since turbulence is minimal.
Nevertheless, a two-person crew is required by the Seaway regulations and my question was "does anyone have experience in getting a temporary second crew to go through the various locks?" That would be most likely a different person for each lock or one person for locks that are nearby, like Eisenhower/Snell. Peter