Sigsy, just as an addition to my last post............something I was advised about yonks ago........if your fishing really rough ground or heavy, kelpy areas - simple is best - for 2 reasons:
1. you're gonna lose a load of rigs - why waste all those crimps, beads, swivels, etc !
2. The more crimps, beads swivels, etc you use - the more chance that they'll snag.
I used to fish the kelp beds just South of Souter and found that in those kind of situations the REALLY basic rig was the best....
I've amended Tonys' (Wallsendo) photo to show the simplest rig and the one I used for the really heavy ' kelpy areas (hope you don't mind your pic being doctored Tony):
Because it's just a basic lob out (in most cases when fishing these locations), there's no need for things like bait clips or shock leaders....although a weak link (rotten bottom) on the weight could come in handy............having said that - because you're only "lobbing out", you could get away with a sinker length of less than 25lb - so no REAL need for a rotten bottom......if the weight gets snagged, it should just snap off with a bt of a pull.