A three sided label structure is disclosed, having three interconnected label sections. In exemplary embodiments the cuff guard comprises a body comprising at least one layer of durable material such as neoprene or nylon; a first fastener element and a second fastener element, disposed such that when the body is folded around the hem of the pants leg, the first fastener element engages the second fastener element, detachably affixing the body to the pants leg. When the first digest matches, a data structure of second digests occurring with the same first digest is built, associating each combination of digests with a position in the stream where the combination of digests is found. When used on multihull watercraft a propulsion mechanism is mounted between two of the hulls, and there is an operative connection between the wind turbine shaft and the propulsion mechanism. The biasing member is interposed between the cover the pressure plate, and biases the pressure plate toward an engaged pressure plate position. Keywords are identified for each of the co-requested online resources, and can include keywords that were selected based on text content of the co-requested online resource.