Also, I'm looking in page 20 of the Brewer's Associate Draught Beer Quality Manual, and in reference to coil/cold plate jockey box systems:
"They are also used with higher pressure CO2, which can overcarbonate a typical keg when tapped longer than a day."
I'm just not exactly sure why a jockey box system wouldn't be recommended for day-to-day use when a long draw system is used for day-to-day commercial purposes. I appreciate any information! Thanks!