Gary said it right,

The only issue with tacking a uni-rigged, even when applying the right technic, it that they have a little more tendency to wind back up into the wind when you pull on the mainsheet to soon. Once this happens you are pretty much lost; you'll be losing many places and alot of time by backing up and pushing the boat to one side. I found this tendencie especially menacing during mark roundings where dirty air of other boats makes tacking more unpredictable.

Of course it it better to make a less optimal tack than to blow a tack. Therefor I let my platform rotate a little further of the wind than is strictly required IN LIGHT AIR. Now I only slowly pull in the mainsheet and keep the angle of my rudders small. The boat slowly picks up speed and now you can pull in more tight as you have full action of your rudders. The 3 seconds or so you loose on this wide manouvre is often neglectable. Especially in light air crews all over the place are blowing tack. You also blow a tack when you accelerate out of one very very slow. This may feel like succesful tack but loses more than the 3 sec you will have lost.

In stronger winds, this is not an issue. Here I allow the boat to turn to its new angle or just past it and sheet out some when the boat has turned through the wind. This outsheet main will accelerate the boat initially without rounding it up a lot. Then when you have speed you sheet in and get the full acceleration.

Wouter