right with bill. also you can look for less wave action, wait for a smaller set if you can. then pick a crest to begin your pivot, turn going downhill, be smooth, keep the rudders aligned, and smoke em! my experience is to sheet in hard as you begin to tack,keep the rudders aligned with the arc you want to carve, let the main out 4-5 ft of sheet after head to wind until you are pointing where you want to go, swap the jib leads just as the jib starts to backwind on the new tack. wait till you start picking up speed on the new tack before sheeting the main. if the rudders are stalling straighten them as you ease the main to get going.