Pontoon

FIG. 1 is a front, top, left side perspective view of a pontoon showing my new design;

FIG. 2 is a front, bottom, left side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The dash-dash broken lines illustrate portions of the pontoon that form no part of the claimed design. The dash-dot broken lines depict symbolic break lines and boundaries that form no part of the claimed design. The pontoon is shown with symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.