FIG. 1 is a perspective view of a boat bumper holder, showing my new design;
FIG. 2 is a front elevation view of the boat bumper holder in FIG. 1;
FIG. 3 is a rear elevation view of the boat bumper holder of FIG. 1;
FIG. 4 is a left-side elevation view of the boat bumper holder of FIG. 1;
FIG. 5 is a right-side elevation view of the boat bumper holder of FIG. 1;
FIG. 6 is a top view of the boat bumper holder of FIG. 1;
FIG. 7 is a bottom plan view of the boat bumper holder of FIG. 1;
FIG. 8 is a second perspective view of a boat bumper holder, showing my new design;
FIG. 9 is a front elevation view of the boat bumper holder in FIG. 8;
FIG. 10 is a rear elevation view of the boat bumper holder of FIG. 8;
FIG. 11 is a left-side elevation view of the boat bumper holder of FIG. 8; and,
FIG. 12 is a right-side elevation view of the boat bumper holder of FIG. 8.
The broken dash lines shown in the drawings represent form no part of the claimed design. The article is shown with symbolic breaks in its length using break lines, and the appearance of any portion of the article between the break lines forms no part of the claimed design.