Alton Brown's Wildly Cool Technique For Removing Watermelon Rinds
In a video posted on his YouTube channel, chef Alton Brown shows the efficient use of a wire cheese slicer — with the wheel part removed — to cut the rind off watermelon rounds.
Start by cutting your watermelon into rounds using a large knife. Then, on one of these rounds, make a small incision from the edge of the rind to the start of the pink fruit.
The cut will act as an entry point for the slicer, so you can just turn the watermelon round on its side and run the cheese slicer around the fruit until the entire rind comes off.