Just cut it off... clamp the PC muscle and shut it down the first time I approach the edge then its pretty much my decision when and where from there out... and yes, edging like that a few times over the course of an hour or so of fucking produces serious payloads.
... unless of course my girl has had a few big ones already and is damn near YELLING at me to cum with her, then its just time to ride the wave and cum like crazy, take stock and get back to the grind. Right?