Yup just toss the tiller out the back and it will keep the boat almost dead downwind as long as you let out the traveller about 2 American feet ( 600mm would not mean a lot to you guys on the other side of the pond ) If you find the boat trying to head up a bit whilst dousing then let out the traveller a bit more.

Round the mark, pull in the traveller, clip on the wire and as you go out, pull the main in as you go ( I think thats what I do ).