Abstract: A wire frame assembly for supporting an air filtration bag includes two wire form sections detachably coupled at a frame junction. Each frame section includes a plurality of wire elements extending along the length thereof, and presenting ends terminating at the frame junction. A generally annular ring is carried by one of the frame sections at the frame junction, with the ring protruding outwardly beyond the periphery of the frame assembly. The air filtration bag is accordingly isolated from coming into contact with the sharp wire element ends.

Abstract: A tunnel hull boat with enhanced turning stability is provided. The boat hull hereof includes a pair of sponsons defining an air capturing tunnel. Each sponson includes front, middle, and rear sections delineated by distinct inclinations of the sponsons's inner sidewall. The forward sections of the sponson inner sidewalls are angled generally downwardly and outwardly to allow the sponson bow to slide towards a desired direction. The rear section of the sponson inner sidewalls are angled downwardly and inwardly to inhibit skidding of the stern in a direction opposite to a desired turn.

Abstract: An improved boat hull is provided that combines the handling characteristics of a V-bottom hull with the speed and acceleration characteristics of a tunnel hull boat. The boat hull hereof includes a V-shaped outer hull portion, and an opposed pair of narrow sponsons that depend downwardly from the gunwales to individual sponson base lines positioned between 5 degrees and two-thirds the V-hull dead rise angle, as measured relative to the horizontal from the apex of the V-hull portion.