I used the Help Em Up Harness by Blue Dog for Tanner before he passed. I agree with finding out what issues your dog may be having so the lifting doesn't cause him more problems. This harness worked out great for many months, going up and down stairs, up hills, in and out of cars, etc.

In the late stage, the harness wouldn't even help him "up" the stairs because he just couldn't do it but did help me assist him down the stairs. I physically picked him up the last month or two to go to our bedroom up a flight of stairs, which I think he actually enjoyed. It was kind of like a ride for him up the escalator directly to the tempurpedic bed in an air conditioned room etc. etc...and I digress. He would always get a few treats after this as well, and I'm not sure why because I'm the one who actually carried him...Love goes very far with a Lab.

Bob