I have a bad back (7 broken bones in my spine - 2 in my neck, 5 in my upper back) and 11 pounds isn't too heavy.
Sorry for your health tribulations and congrats on what appears to be a good recovery.
I have a pinched nerve in my left shoulder and a bass weighing more than 7 lbs. is way too heavy for playing while standing even with a soft neoprene strap. Sitting is also an issue since I had a mild stroke nearly four years ago and any excessive weight on my right thigh causes a lot of pain after a while even with padding. Lighter is defintiely better for me, hence my accumulation of a few basses weighing under 5 lbs.
