The ornamental design for a waterfloatwindupdevice, as shown and described.
FIG. 1 of the drawings is a top perspective view of the water float windup device showing, in particular, the ornamental design thereof;
FIG. 2 of the drawings is a bottom perspectiv view thereof;
FIG. 3 of the drawings is a top plan view thereof;
FIG. 4 of the drawings is a bottom plan view thereof;
FIG. 5 of the drawings is a first side view thereof;
FIG. 6 of the drawings is a second side view thereof;
FIG. 7 of the drawings is a top plan view thereof; and,
FIG. 8 of the drawings is a bottom plan view thereof.
The broken lines in the drawing depicting portions of the water float windup device are for illustrative purposes only and form no part of the claimed design.