This is my 2nd time buying chicks I use a heat pad above them and both times I've owned chicks atleast 1 or 2 get trampled under the heat lamp and there bodies are almost one sided due to being trampled from other chicks and for next time I want to try and prevent this should I try switching over to a heat lamp? They huddle up under there and push up against each other and sometimes get on top of each other.
What are the temps in the area you are brooding in and temps under heat pad? How many chicks are you getting at once?