One of the biggest problems we encountered when we first set up our boat sharing relationship had to do with tracking expenses and reconciling member payments. As a matter of convenience, sometimes my partner gassed up the boat, sometimes I did. Sometimes he paid for cleaning, minor repairs, oil changes, or a new flashlight and sometimes I did. How were we to keep track of these minor (and some not so minor) costs associated with sharing a boat?Initially, we sent emails back and forth with the amount we paid and tried to reconcile things on a month or semi-monthly basis. This system broke down quickly for obvious reasons.