Make sure when using a helper tractor to run your cable to the plow frame, and not to the tractor. Tractors tend to break rather than stretch. Fortunately, we didn't have to learn this the hard way. We had good advice elsewhere.

We have a Wurdinger plow. Not super fancy, but it has done a great job. Need a little more time spring and fall each year to use it. Plowing in the tile is a breeze. Finding existing tile and making connections are where the real work come in.

http://www.youtube.com/watch?v=AQlLP_92yy8

http://s84.photobucket.com/albums/k31/redlinefarm/machinery%20videos/?action=view&current=117_1759.flv