Chalk powder on hard courts for line call calls

[jrs]

Would chalk power on hard court make them slippery? I was thinking if brush small amount of chalk powder along the lines - you will be able to see ball marks to determine in or out similar to clay. Provided the courts don't become too slippery.

 

[illzoni]

...and how could you be sure the chalk covered the entire line exactly? If you can't make that guarantee, then balls could hit the link without hitting any chalk.

 

[jrs]

I was thinking about using a small roller covered in chalk powder, trace along the outside of the lines and service lines. If there is a close call it can be verified against the chalk mark. If there is no mark - ball was either way outside or on the line.

 

[struggle]

balls leave marks on hardcourts already.

even marks left on clay have been shown to be inaccurate, although we still use them.