Ben's foster parents wrote that Ben takes 52 stairs at a time in their initial notes. In 7 years, I've never seen Ben take the stairs in our home 1 by 1. He never slips but they are carpeted.
Put a non-slip mat where Sail needs it and he should be fine.
When we dog sit I just pile pillows and blankets on areas where I don't want the dogs to jump on to which works...along with really comfy pillows all over the floor.
I admire you for looking for an alternate solution to crating.
I hope he finds a forever home where he can be happy which includes positive reinforcement for appropriate behaviour or whatever training he needs...thanks for the update.
this is so incredibly sad...there are so many 'Daniels" out there...thank goodness for all the angels who help. rest well sweetie...if love were enough, you would be here forever.
Brooke, our 60 pound female gets 4 cups/day, along with a couple of small treats and she's fine. She gets a lot of exercise too, generally speaking, certainly a lot more than other dogs in our neighbourhood.