In reply to dunnyg:
Is it the old type of camalot that doesn't have a thumb loop? (ie the sling goes through a small hole at the end of the stem).
If so either 5.5 mm dyneema / spectra CORD (tied off with a tripple fishermans) or 7mm accessory cord (tied off witha double fishermans) is best.
Post edited at 15:28