Can't you throw something (rope) right over the top of the whole beam, or is it flush? In my head I can see the kind of peghead hooks you'd need - just sort of a double hook just wide enough for the top on the neck, made out of some wire twice as thick as the thickest coathanger wire, and covered over in some sturdy foam.
http://www.ebay.com/sch/i.html?_odkw=&_osacat=19264&_trksid=p2045573.m570.l1313.TR2.TRC0.A0.H0.Xfoam+tubing&_nkw=foam+tubing&_sacat=19264&_from=R40
Or, you could get some... 3"? 2.5"? PVC pipe, cut into sections, then with a slot cut into it for the neck. If you're planning on falling in love this spring, you could try to hook up with a macrame chick, see what sort of talents she can bring to bear. :icon_thumright: