The ornamental design for a golfballretriever with elastic strap, as shown and described.
FIG. 1 is a perspective view of a golf ball retriever with elastic strap showing my new design mounted on the arm rest of a golf cart.
FIG. 2 is a top view looking from the handle.
FIG. 3 is a front view thereof.
FIG. 4 is a side view thereof.
FIG. 5 is a bottom view thereof; and,
FIG. 6 is a back view thereof.
The circular broken line in FIG. 5 representing the inside diameter of the tube that the retriever is mounted on forms no part of the claimed design. The broken line showing the outline of the golf cart is for illustrative purposes only and forms no part of the claimed design. The design is shown partially broken away in FIGS. 3-5 and FIG. 6 for ease of illustration.