You are welcome to take a guest on the double, once you have been checked out rowing #1 seat. Members are not permitted to take guests on singles, unless they have volunteered as an instructor or assistant instructor. This because you will need to deliver a condensed introductory rowing lesson to your guest in order to get both them and the boat safely out and back. Your guest must sign the guest book and waiver - if they are under 19 a parent or guardian must sign on their behalf.
We recognize that there are always exceptional circumstances (your dad is in town and used to row on the East German national team, your friend Silken Laumann is visiting for the weekend) and we would happy to accommodate you. Please contact the rowing director to make prior arrangements - it is better to ask permission than forgiveness.