The ornamental design for a rippledstrap for a pickleball paddle, as shown.
FIG. 1 is a perspective view showing the rippled strap for a pickleball paddle embodying the new design;
FIG. 2 is a left side view thereof;
FIG. 3 is a right side view thereof
FIG. 4 is a front view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken line showing of the paddle and handle is included for the purpose of illustrating unclaimed subject matter and forms no part of the claimed design.