Inverter, to mount or not to mount?

Well I have just returned home from WA earlier than planned being unsure if the airlines would continue to operate for the next week and although beating the midnight deadline set by the government have decided to self isolate, reasons being at the Perth domestic airport there has been no distancing rules abided by except the bars have been closed but lots of people close together in the terminal and aircraft and the chap sitting near me was eating soothers like peanuts all the way here. So lots of unplanned time to work on the CT.

My first question is how do people mount their inverters?
I have a Redarc 350 watt inverter that I intend to run an electric blanket with for a couple of hours before bed time to take off the shock of getting out of a nice hot shower and into a frozen bed on winter desert evenings, it runs fine with both sides on high and could run all night on the low settings if needed.

Dont really know how rough the ride is in the trailer when on corrugations but I imagine it would be fairly taxing on electronics with heavy components soldered to circuit boards if solid mounted.
I would be interested on hearing how others have mounted them and the orientation, or have you chosen the other option of stowing them till they are being used.

Other question is, being in isolation do you think it is a mistake doing this sort of work? I am not a clumsy worker and for the last decade had safety drummed into me whilst at work, and believe it or not this does sink in and makes you put a lot more thought on how you do things at home as well.
But given the circumstances even a slightly worse than average cut that might require a stitch or two could be putting others at risk.
Is it being selfish taking the risk?