The ornamental design for a fin mounted surfboardrack, as shown and described.
FIG. 1 is a front perspective elevational view of the fin mounted surfboard rack in an extended position, in accordance with an embodiment of the present invention;
FIG. 2 is another front perspective elevational view of the fin mounted surfboard rack in a retracted position, in accordance with an embodiment of the present invention;
FIG. 3 is a front view of the fin mounted surfboard rack of FIG. 1;
FIG. 4 is a rear view of the fin mounted surfboard rack of FIG. 1;
FIG. 5 is a top view of the fin mounted surfboard rack of FIG. 1;
FIG. 6 is a bottom view of the fin mounted surfboard rack of FIG. 1; and,
FIG. 7 is a right side view of the fin mounted surfboard rack of FIG. 1, the left side view being a mirror image thereof.
The broken lines shown in the figures are included for the purpose of illustrating portions of the fin mounted surfboard rack and form no part of the claimed design.