If your back is weak now, after so many years of training it will always be weak. Period. Wes and many others will give advice on how to bring it up but the fact of the matter is that no one save a relative beginner ever changed their proportions, how strong/weak their bodyparts were in relation to each other, not after years of training unless you have totally neglected some bodypart.
Even if you started juicing the proportions would stay the same pretty much and your back would be weak.
When people give advice to pros on how to bring up a weak bodypart I always shake my head. Wont happen. With oil or implants maybe.
Agreed 1000%.
I made my post on the assumption that after all these years he has been doing things WRONG.
If so, my advice is just to tweak things and make sure he has been doing them correctly....if he has been doing things "right" after all these years and he still has no back, he's fucked.
Like Bob C. once said on "War For The Worlds" when asked if pros can bring up body parts that are weak (example: Johnnie Jackson's legs...he squats 700+ yet they're are still "small.")...
"Some of these guys have been working out 10-15yrs. If a judge says 'If you can bring your back up you'll win the next contest.' But really if they've been working out 15yrs, what kind of progress do they expect to make? Not gonna happen."
Ok, so I was probably much more long winded than he was....but trying to get the point across.