Holding a long conversation on a watering hole frequencies (14.105, etc) prevents other users on that special frequency. Perhaps setting a timer (5 minutes) at the start of the conversation and popping dialog with the timer expires suggesting to change frequency +/- .750 MHz (per Gary's Nov 12th request).
I'm not sure automatic QSY is a good thing, though.
Reasons not to have automatic QSY
both parties should agree before changing frequencies
US parties might need to CW id before changing frequencies
don't want to QSY back onto the "watering hole" frequency