The ornamental design for a basketballcoachingaide, as shown and described.
FIG. 1 is a perspective view of a basketball coaching aide showing my new design;
FIG. 2 is the back elevation view thereof;
FIG. 3 is the front elevation view thereof;
FIG. 4 is the left elevation view thereof;
FIG. 5 is the right elevation view thereof;
FIG. 6 is the top plan view thereof; and,
FIG. 7 is the bottom plan view thereof.
The evenly dashed broken lines shown in the drawings depict portions of the basketball coaching aide that form no part of the claimed design. FIGS. 1-5 show the basketball coaching aide with a symbolic break in its height. The appearance of any portion of the article between the break lines forms no part of the claimed design.