A punt is a flat-bottomed boat, typically used in small rivers and canals. It is propelled by pushing the river bed with a long pole. There are several punt hire companies located along the river Cherwell including [IPG Marine]? by the Head of the River pub, [Magdalen Bridge Boathouse]? and Cherwell Boat House.
Punting technique The user stands at the stern and tries not to fall into the water while holding the (rather heavy) wooden pole (known as a quant). In Cambridge the punter is balanced on a flat wooden platform, whereas in Oxford, where the punts are shaped slightly differently, the correct position is to stand on the slatted decking in the punt (many visitors to Oxford incorrectly propel the punt from the raised end that should be the bow). A naive attempt at propulsion by pushing with the pole against the mud at the bottom of the river is likely to result in the punt's moving in a circle, or heading constantly into one of the banks. Usually, numerous spectators will be present on bridges and banks and will find it greatly amusing, but consuming a sufficient amount of alcohol beforehand will increase the punter's confidence and sense of accomplishment, regardless of the actual merit of the performance.
One better technique is actually to use the pole as a rudder, letting it drag in the water behind the punt and moving it left or right to steer. Steering and propulsion are alternated.
The rudder method of steering can be slow (as while you are using the pole as a rudder you're not using it to propel the punt forward). A faster method, requiring more skill, strength, and judgment, is to drop pole slightly away from the punt (turning right for right handers) or slightly under the punt (turning left for right handers) and push backwards as normal. The generated torque will rotate the punt, probably too much if you are not experienced.
Alternatively a student can be employed to do the punting.
Richard Ashby has written another guide to punting which is well worth consulting.