Jacko, thats exactly what id do, build a fire, stick em on and walk away. Polish em up afterwards with a bit of T cut. Come up nice and shiny and if your lucky you might have blue tinges to them caused by the heat which looks ace on stainless i reckon.
That actually doesnt sound like a bad idea, do I fill it with water or anything? or just dump it on? I love the way stainless looks too after it gets red hot, like car exhausts!!