Abstract: A diving apparatus is placed in serial connection with the end of a fishing line, approximate to the trailing and submerged end of the line as the line is used in trolling. The apparatus includes a diving platform constructed with an aperture and spanner for a catch member in the central portion of the platform. An improved release mechanism is disclosed, including a loop member which loops the spanner and extends pivotally downward from the point of release member attachment to the trailing line, hook and bait. The remainder of the line end attaches to a flared catch member, which attached and flared member is provided with opposed arcuate portions for capturing therebetween said loop member. A bridle connected to the forward and leading end of the platform preserves the diving angles as a function of the line length left from the vessel, independent of bait, weight or buoyancy.

Abstract: A diving apparatus is placed in serial connection in a fish line proximate to the trailing and submerged end of the line as the line is used in trolling. The apparatus includes a planar diving platform constructed with a transverse base area at the leading end of the platform having trailing and projecting flukes spaced to form a longitudinally extending and rearwardly opening central slot. A keel is fastened normally to the plane of the platform and depends forwardly of the slot to define a sinker holding surface on which paired, substantially hemispherical weights are fastened on either side thereof. Two normally depending and projecting fins extend normally down from the planar surface of the platform immediately juxtaposed to both sides of the slot. The release member has one portion connected to the leading end of the fish line and a second member connected to the trailing edge of th fish line.