The ornamental design for a hookrack, as shown and described.
FIG. 1 is a top, front and side perspective view of a hook rack showing our
new design; FIG. 2 is a front elevational view thereof; FIG. 3 is a rear
elevational view thereof; FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof; FIG. 6 is a top plan view
thereof; and, FIG. 7 is a bottom plan view thereof. The broken-line
disclosure of elements in the views is for illustrative purposes only and
forms no part of the claimed design.