I don’t think you need to turn on location for any of the tools mentioned in this thread. It’s useful, but not necessary. If battery life is an issue you could try out MapSwipe. Everyone’s got to find their favourite way of contributing :)

It’s a bit of a gamble. Sometimes flushing a second time can add just enough weight (and therefore pressure) to dislodge the clog and fix the problem. I assume that’s what those people are trying to do