Phil Edwards; Sheets and Tacks are the lines at the lower corners of the sail. The Sheet, the leeward corner & the Tack the Wind'ard. The Halyard is the line that sets the Sail. Hauling on the Halyard, (or setting the sail), took a lot longer than trimming after tacking or wareing, (turning). Typically the job at tacks and sheets took 2-3 sharp pulls.