There is no swivel supplied with AnchorRescue. You can use it with a swivel but we do not supply one. We do supply a spacer to be used between the swivel and the slider should you use a swivel.
The maximum load capacity of 760lbs is for the tether and the slider/retriever connection and only comes into play during an anchor retrieval. Basically if your anchor is stuck to the point that a 760lb pull on the crown won't dislodge it, you've exceeded the limits of AnchorRescue. Your anchor/rode connection is never impacted by the load capacity of AnchorRescue.