During my towing days, we had an emergency clamp that would attach to the towline (wire rope).* The assembly had several wedges that tightened against the pull of the wire.* Lines were shackled to welded eyes on either side of the clamp and made fast.
Although we called this a Carpenter's Clamp, it could have other names in different settings.
The problem with*"squeezing the wedges around the wire*concept", is that there is tremendous force on the steel assembly.* I've seen one of these let-go under tension, and the schrapnel was impressive.* No one was hurt, but we were not inclined to want to use the new replacement clamp.
If your purpose is to provide additional snubbing capability on your rode, you may have to simply consider additional catenary by putting out additional rode or equipping your rode with more chain between the anchor and*cable.* Or both.*
You could also consider placing a set length of nylon line somewhere in the rode not usually vulnerable to chaffing based on where you normally anchor.* Obviously, there are a number of limitations on this idea.
If your concern is holding the rode by*the winch, drum winches are almost always equipped with a rugged pawl or other locking mechanism that is generally engineered to hold up to the breaking strength of the cable.* This also assumes the winch is strongly mounted.
The only problem I have encountered with my SS cable/winch drum system, is the tendency to bury in the drum if there are high forces.* It is important to keep good tension on the wire as it is retrieved in order to minimize future burying.* Basic anchor system housekeeping.
During my 14 years with this winch, I continue to be impressed with its ease of anchoring handling.* Cruised 120 days last year, anchored 108 days.