It may sound like a smart ass comment, but it isn’t meant that way. Use two hands. I’m left handed, so here is how I do it when my hand gets a little shakey, I hold the control part of the stinger with my left hand, control the trigger for wire feed with my middle and index fingers, and with my right hand I hold the nozzle part of the stinger. Not too far up to get burnt, but far enough up to steady everything.