The ornamental design for a trolling motorhead, as shown and described.
FIG. 1 is a front perspective view of a trolling motor head showing my new design;
FIG. 2 is a front view of the trolling motor head of FIG. 1;
FIG. 3 is a rear view of the trolling motor head of FIG. 1;
FIG. 4 is a right side view of the trolling motor head of FIG. 1;
FIG. 5 is a left side view of the trolling motor head of FIG. 1;
FIG. 6 is a top view of the trolling motor head of FIG. 1;
FIG. 7 is a bottom view of the trolling motor head of FIG. 1; and,
FIG. 8 is a front perspective view of the trolling motor head of FIG. 1 shown with a trolling motor mount.
The broken dash-dot-dash lines immediately adjacent the shaded areas represent the bounds of the claimed design while all other broken lines illustrate environment that form no part of the claimed design.