Found a great replacement cocking/crank rope. It is Samson Amsteel 7/64" Dyneema Fiber 1600 lb. strength. 37 feet for $13.99 tmd. From Columbia Basin Knot Co. in Washington State, email, firstname.lastname@example.org and on E-Bay, where I got mine. Only had blue but ok by me no UV glow.
Sorry can't figure how to resize photo for posting.
For information this is the "rope" only no hooks.