Yes you do, BUT when you sail most heavier uni's, as you are sheet in tight going to weather with speed, As you start the tack, the second you go head to wind you MUST uncleat 2-3 feet of sheet and recleat it as you go to the other side and change the tiller or. Then as you go to a reach heading on new tack, SLOWLY begin sheeting in and heading up. If you DON'T you will go into irons. TRUST me I learned this the hard way. A cat my be different because it is so light?
Doug
It was more along the lines that you ever cleat the mainsail upwind. The only time I cleat if I don't have a spare hand while I am doing something else or when the the kite goes up <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />
Agree 100% you need to ease some sheet as you tack as the boat will slow down, and the apparent wind is changing.
