Poltergeist is right on the money. You will need to experiment with how far the tiller needs to be to leeward and how much to trim the mainsail. This balance point is critical. This technique works great in all different types of weather conditions.
I used this technique on my C&C 36 quite a bit. Once I figured out the balance point it mad life so much easier. I would use it when I needed a break, while waiting for friends to catch up in their boats, or waiting for daylight outside a new harbor or anchorage.