You don't put the glow ignitor on the glow plug throughout. You put it on only when you close the throttle and open the tank lid to refuel. The glow ignitor is just there to ensure that the engine keeps running. Opening the fuel tank when at WOT will make the engine scream ! That's not what you want.

Well, I know I don't do it for 10 minutes. That's for sure. But a tank will take very fast. Say about 2 minutes. The HSN is set to very rich (perhaps 8 to 9 rounds) so much so that at WOT, the engine is gurgling and spewing out oil from the pipe. For the new Novas, I would do about 15 to 20 tanks or so with this method. Running it rich constantly flushes out all the dirt and metal debris and lubricates the parts necessarily to polish the piston and liner.