TroyF,
I know what you mean, My 10 1/2 Year old Newfoundland there have been times when we have over done it with her (weekend warriar). She "wants' to run and play with the other dogs and sometimes doesn't realize that she is over doing it. I found that acupuncture helped her, we moderate her exercise as she really will act like a puppy and go crazy when out for a walk.
For my Newf with Elbow Dysplasia we are going to start acupuncture with him. He seems to be doing very well, but, we also have to be consistant with his exercise...one day of over doing it can make him uncomfortable. We keep his weight at a healthy zone and he is doing very well.
With my Rottweiler Athena with Hip Dysplasia I am starting acupuncture tomorrow, I really believe the supplements have helped her all these years...she even shocks the vets at how well she is doing with her degree of HD.
You could also try accupressure at home, basically a massage with a little pressure on some key points. I wish I could send you a diagram of all the key pressure points.
Adequan is great as Mordy mentioned you can also get the vet to inject Adequan-R. I've tried it, but, I find my dogs do better on the Nutri Aid GCM.
If you do decide to go with Metacam for those days when your dog really needs it...make sure you give Milk Thistle to protect the liver. Discuss this with your Vet and ask when to give the Milk Thistle...most Vets are becoming aware of the value of Milk Thistle when a dog is on a medicine that is harmful to the liver.