A bit oblique but don't lose sight of a really well done LI Profile. I admit this is self-serving since I run a firm editing resumes, performing LI Profile enhancement and interview coaching in Shanghai, China. I am not selling here. However, I have had numerous clients with de-minimus LIPs and a bit stuck in their careers. They hired me to spruce theirs to "all-star" status. After turning on the "want to hear from interested parties setting", reaching out to old colleagues for referrals and building a broader network, they started hearing from HHers and HR who they would not have otherwise. And some found new work within the month.
It does work if you pull all the levers. You can CERTAINLY do your own LIP if you are willing to put the time in and have an acute eye for detail. It is an excellent investment to get it presentable.