The string thing is absolutely a must have for every tennis player. I mean, you don’t have to keep it in your pocket, I leave mine in the bag and use it on change overs or when taking a break, but I ALWAYS use it before I put my sticks away.
It’s really handy for after stringing, I tend to get the “rainbow” effect on the crosses so a quick up and down with the string thing and it’s good for stencil and the court.
Great video!