The ornamental design is a fishing rod holder unit, as shown and described.
Description:
FIG. 1 is a reduced prespective view of a fishing rod holder unit with the fishing rod shown in broken lines for illustrative purposes only, showing my new design.
FIG. 2 is a perspective view of one part of the fishing rod holder unit, the obverse sides being identical with that shown.
FIG. 3 is a perspective view of another part of the fishing rod holder unit, the obverse sides being identical with that shown.