A very interesting thread which I have enjoyed reading through.
When I started out and had got beyond using the old atomisers with silica wicks, I read about this idea of cleaning coils, but tried it and honestly thought it was more bother than the results justified.
In my Doomsday stash I have devices that have rebuldable coils; I can rebuild coils on auto pilot ... but, if I am honest, drop in coils to me taste better and last for at least six weeks so I'm happy to stick with them until I can't get them any more.
Others mileage may vary ... and BTW if I did try it again I certainly wouldn't be using surgical spirits - maybe Bell's whisky, which we sell to the English as revenge for Flodden, and which I used to buy to clean my pipes out with when I smoked but not surgical spirits!