The ornamental design for a fishingrodholder, as shown and described.
FIG. 1 is a perspective view of a fishing rod holder showing my new design;
FIG. 2 is an additional perspective view thereof, with the broken line disclosure of fishing poles being for illustrative purposes only and forming no part of the claimed design;
FIG. 3 is an enlarged perspective view of one of the leg mechanisms thereof, with the remainder of the holder being omitted for clarity of illustration;
FIG. 4 is an enlarged perspective view of one of the foot assemblies thereof, with the remainder of the holder being omitted for clarity of illustration;
FIG. 5 is an enlarged elevational view of one of the foot assemblies thereof, with the remainder of the holder being omitted for clarity of illustration;
FIG. 6 is an additional enlarged elevational view of one of the foot assemblies thereof, with the remainder of the holder being omitted for clarity of illustration; and,
FIG. 7 is a perspective view thereof, shown in a collapsed configuration.