Every tack is a roll tack when you're uni, even if you have wind and think you can make it. Keep your tiller hand dead smooth through the turn while sitting on the windward hull just in front of the crossbar. Let out about a foot or two of mainsheet to take the pressure off the main just before you come through the center of the tack, this will let your main come across and reshape itself more easily. AND, get to the front crossbar on the new windward hull fast as soon as the battens pop on the new tack. Take the sheet with you as you cross and fall off to accelerate back on course on the new tack.Sheet in as you regain your speed, It's pretty precise and deliberate, but works every time.
CARY