In AquaNotes you can log any of the AquaController controlled devices. If you want to log when a float switch is closing/opening then just add, a bogus timer name like SW1$-P1, and then a couple of program statements:
If Switch1 OPEN Then SW1 OFF
If Switch1 CLOSED THen SW1 ON
Then enable event logging for SW1 in AquaNotes.
Curt