The ornamental design for a paddle-retaining block, as shown and described.
FIG. 1 is a perspective view of a paddle-retaining block showing my new design being used on a stand-up paddleboard;
FIG. 2 is a perspective view thereof;
FIG. 3 is a side view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a top view thereof; and,
FIG. 6 is a bottom view thereof.
The broken lines in the drawing are for illustrative purposes only and form no part of the claimed design.
The application relates to the design of a paddle-retaining block which is used for the sport of stand-up paddleboarding, and can be affixed to the deck of a stand-up paddleboard to allow the user to secure his/her paddle in an upright and easily retrievable position while engaged in fishing or other activites requiring the use of one or both hands.