Ballast in a dinghy
is important too. Move to the low (leeward) side of the boat just before you start the tack. This will start the boat turning into the wind. Then move the rudder AS LITTLE AS POSSIBLE so that speed is maintained. The boat's track through the water should look like an "S", not a "Z". If you have crew, have him ease the jib
slightly as move to the low side, then allow it to backwind for a time (less for more wind) with sheet in hand, uncleated, before allowing it to move to the new tack.