The ornamental design for a driftanchor, as shown and described.
FIG. 1 is a top and front perspective view of a drift anchor showing our
new design;
FIG. 2 is a bottom and rear perspective view thereof;
FIG. 3 is a bottom and front perspective view of a second embodiment of the
drift anchor, the sole difference from the first embodiment being in a
pair of floats and an intermediate weight sewn into the hem thereof; and,
FIG. 4 is a bottom and front perspective view of a third embodiment of the
drift anchor, the sole difference from the first embodiment being in four
pockets sewn into the hem and within which weights or floats are contained
.