Larry Jaques wrote:

... I wonder if they'll someday make one which fits a
10/3 100' cord...

Extra large:
http://www.cordpro.com/cpxl.html

150' 12/3, 100' 10/3, or 60' 3/8 _air hose_
16" dia, 4-1/2" deep, $35

I could use a couple, if it wasn't $35. Maybe HF could get a Chinese
supplier to make them.

Bob