Jousting match on water - two men wear canoe shaped shoes and have a bout.
"Something new in the way of fun for your regattas...... try it......" states an intertitle.
M/S follows of two men with their feet in little canoe type constructions holding poles for balance in a swimming pool. They are floating on the water thanks to the things on their feet. They move their legs and move along in the water. The poles turn out to be for jousting and we see each of the men knocked into the water by the other.