Broke mine a year or so ago. Yes, I have advice. Get the collarbone pinned. If your doctor says just put it in a sling and it will heal just fine, get another doctor. Broke mine last year and my very good and knowledgeable ortho surgeon said 'some doctors prefer to put a pin in it but I don't'.
He was WRONG. It took FOREVER to heal and hurt like hell the whole time (plus, I rebroke it three weeks in because it was unstable). In the mean time I met a dozen people who'd broken their's and felt great three weeks after the procedure.
Get it pinned. Trust me.
