I was disappointed that there wasn't a picture of the repair, but an insulated wire would have been plenty indeed. I've let the magic smoke out of several MOSF

I was disappointed that there wasn't a picture of the repair, but an insulated wire would have been plenty indeed. I've let the magic smoke out of several MOSFET devices in a QRP SSB Transceiver kit, and had jumper wires all over the place. The electrons are too dumb to know if it's an insulated wire, or a PCB trace, as long as the layout is good. One thing this does enlighten me about is why physical air gaps are built into so many PSU PCB's between the high and low voltage sides, with often only a transformer crossing the gap.