For you people that sit on a high stool, you can use a knee switch.
I like to stand (even if the feet so no) and have made a home made switch, (can't seem to find one in NZ) and use the front of the knee to switch on/off.
When I do sit (when I take the saw out doors) the switch is at the side of the stand and I use side pressure with the knee to turn on/off.
***Merlin***