I was also thinking that some people put paper towel down on the tray in incubator for traction for the chicks. However I am thinking that may keep the humidity from rising and keep humidity low if using. Is it still recommended to use the paper towels for traction so they do not get splayed leg or do most people not use the paper towel or felt on tray bottom? Thanks.
Are you meaning for the octagon models or for the mini models? For the Brinsea mini models I would certainly recommend the use of self liner/kitchen towel as the surface in the mini's are slippery. I've never had a problem with the octagon tray though.