The ornamental design for a weightedskirt for a soft fishing lure, as shown and described.
FIG. 1 is a perspective view of the weighted skirt for a soft fishing lure;
FIG. 2 is a front elevation view, with the rear view being a mirror image thereof;
FIG. 3 is a side elevation view, with the opposite side being a mirror image thereof;
FIG. 4 is a top view of the weighted skirt illustrated in FIG. 1; and,
FIG. 5 is bottom view of the weighted skirt illustrated in FIG. 1.
The surface shading and broken lines shown in FIGS. 1-5 represent portions of the weighted skirt for a soft fishing lure that form no part of the claimed design.