I too wouldn't take a child that I couldn't lift or couldn't lift repeditavely with out straining my back. What about playpens ? They have a weight restriction.... So do strollers and wagons. If part of your program is to hike everyday but this child wouldn't be able to do it then everybody is affected. I currently have two 1yr olds that are just over 30lbs each and lifting them in and out if the high chairs and play pens several tines a day is strenuous. No way would I take a 60lb kid that I have to lift regularly. I also wouldn't take a child with special needs as I am not qualified to care for them and I don't take children with life threatening food allergies cause I don't want the liability. You can call me discriminatory but as we are always are saying .... My business my rules !