There is little difference between a pulley rig and a single branch ledger where the trace sizes are equal as far as I can see...
That is, Assuming the sinker has purchase on the sea floor, then pressure exists from the sinker, through the rig backbone to the top swivel and then to the mainline on a pulley rig.
When a fish takes the bait, it will hold it in its mouth and run or swallow it down close to where it gabbed it, but the sinker->mainline pressure will be approximately the same as a ledger rig.
Another way of thinking about it is to use a pulley rig and not clip it down before casting.
Looks very similar to a ledger but with the trace sitting higher up.
I think that by the time the rig is cast further than 50 metres then the small amount of give the running rig has is negated by the weight and friction of the line in the water back to the rod
As to hook up rates between them?
Less important than correct bait presentation, correct hook type and size and line placement IMO.
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