No sailboat turns like the Batmobile. You cannot cruise up to the turn at full speed and turn 90 without stopping the boat. We're going to do that by dropping the board well before the turn. Of course we need to get the chute down well before the turn. It seems like a lot of sailors hold the chute too long and then have an abrupt slowing when they turn the boat.
Some people feel that heeling the boat to help the turn is good seamanship.
I'm in agreement with that if we're talking about only a couple of degrees of heel so that the boat carves a gradual turn with only a minimal increase in windward helm. More than a slight increase in heel results in excessive helm, more rudder drag, and more difficulty controlling the amount of turn. We create that slight helm, and I mean slight, by trimming the main. How quickly you trim the main sets how rapid the turn will be. Obviously a little practice in the mechanics of trimming the mainsheet goes a long way in helping the skipper execute a more smooth turn.