After the pad is primed, about four dots, each just a bit larger than a pea. I'm usually only able to get about three passes out of SIP and foamed wool. Occasionally four. Works out to be about 35 seconds or so. Working time on Menz polishes is really variable according to temp and humidity, though. SIP doesn't normally finish out really clear like most polishes do, either. It starts to flash before it goes clear (in the dry air where I'm at, at least). It still leaves a *very* nice finish, even if it's not clear when it's too dry to continue polishing.
With 106FF, you should have almost unlimited working time. There's no real point in working it after it goes clear and very oily looking, though. The abrasives are pretty much gone by then. I usually work 106 and 85RD for two minutes with foam, 1.5 minutes with white finishing wool.