I don't quite understand. You mean in case the user already set the poll time in seconds skipping the yamb polls would result in a 60 times longer poll time?
How is the change usually done? If it's at the start of tb the user would have to restart tb to change the setting. This would not be to bad because you wouldn't change this too often. Or just drop a warning and the user would have to change the settings manually.
Worst case would be two separate extension: one with the possibility to set the time in seconds, one just using the normal poll.
Or did I misunderstand what you said?