I felt the same way about my Premier heat plate. I just made sure I had one end a little higher than the other so there was some choice in where to sit. I generally tried to keep mine at a height that was barely touching their backs (not heads) when they were standing. That worked well, and I had no issues with chicks not using the plate or being harmed by it. BTW, it was so hot, I could not keep my hand on it for more than a few seconds, but, when they lay down, they are not touching it.
That's my experience - so hot I can't keep my hand on it.
The interesting thing is that the instructions and the write-up on the Premier site says that it is not designed to be a heat source but that they have to "TOUCH THE HEATING PLATE".
Quote: http://www.premier1supplies.com/detail.php?prod_id=120893&criteria=heat+plate
I still think it's too hot for a chick to touch. If it DOES radiate heat downward, like they say that it DOESN'T, then I'd just go ahead and put it up somewhat higher.