FIG. 1 is a front elevational view of a weight string winder for duck decoys showing my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing of a decoy in FIG. 1 is for illustrative purposes only and forms no part of the claimed design.