What distinguishes a 'choker hitch' from a 'basket hitch' in terms of load capacity and stability when rigging?
A choker hitch and a basket hitch differ significantly in load capacity and stability due to the way the sling is configured around the load. A choker hitch is formed by passing one end of the sling through the eye or loop at the other end, creating a noose-like configuration around the load. This configuration reduces the sling's effective load capacity, typically to 75% or 80% of its vertical rated capacity, because the sling is subjected to bending stress at the choke point. Additionally, a choker hitch provides less stability than other hitches, as the load can shift or slip within the sling. A basket hitch, on the other hand, involves cradling the load with the sling, with both ends of the sling attached to the lifting hook. This configuration generally provides the highest load capacity, often rated at twice the sling's vertical capacity, because the load is distributed evenly across both legs of the sling. A basket hitch also offers greater stability, as the load is less likely to slip or shift during lifting. Therefore, while a choker hitch can be useful for certain applications, a basket hitch is generally preferred for heavier loads and when greater stability is required.