Yes Canoedogs, and B.C. Hydro still tells their linemen that if they are lost to light one big fire instead of three.

Not only is the one fire easier to look after, but you can make it big enough that the smoke punches through the thermal inversion layer and rises as a column instead of spreading out and looking like another fog bank.

They are actually told to find a lonely spruce. One that is isolated on an island is preferred. Then stuff the lower branches full of kindling and torch it.
They figure the forest service will locate that flare for them and send somebody to check it out.
The tree does not have to be dead to burn but the drier it is the better it will flare.

It is real good to have somebody looking for you though. A lot of people would never make the connection between a signal and somebody in trouble.
So have a travel plan like a flight path with a return time handed in before you take off intro the great unknown, right.