Ya, currently I dont use a pump and just strain the hot/cold break and crud out before going into fermenters.
But, I am thinking of getting a pump to whirlpool but just not sold on it yet.
It seems when people use electric kettles they dont use immersion chillers due to element being in the way of the chiller.
What do you mean by "suspend a bag over the kettle"? do you mean over the fermenter? or like a hopspider?