No ramp to the roost. They use it during the day. They just don't sleep on it at night. Never have. They're all up on the top roost as we speak.
I just swap waterers out multiple times to keep fresh water out there. Probably time for a dog dish.
I use the heated pet bowls in winter - I have a one quart heated bowl for my breeding pens of 3 or 4 birds and I have the 1 gallon heated for my layers (9 - 12 hens) I only refill once a day. I check twice a day but only refill once. They are a lifesaver.