Thanks for raising some very interesting issues on what i consider to be one of the biggest responsibility us Carp anglers have. I would like to add a couple of comments mainly on bolt clips, i always make sure that the clip, tail rubber and swivel are produced by the same manufacturer, ie Korda, ESP, Fox or whoever, i don’t mix them, that way, in theory you should have the correct size swivel fitted in the clip and it should release safely once the fish has bolted. Secondly once the full rig is assembled, get hold of the hooklink, give it a good shake and check that the tailrubber does it’s job and releases the lead as it should do, i know this may seem obvious to most anglers but to those who don’t know, i think it is good practice.
Lastly anybody using any sort of leader or leadcore, please don’t attach your mainline to the leader using a swivel, i have seen 2 examples of this recently, one still attached to a fish with the lead still on and the leadcore pulled through the boltclip and jammed up against a swivel at the top. Very bad practice i think you will agree.

Dave Bainbridge