Just my approach. Don't got so heavy on the shock leader, down size to 30lb and see if you get bite offs. Then If you do get a bite off, not bust off, rethink the situation and make adjustments if you think it's warranted.

perhaps you need to change the way your line is retrieved, or the sinkers you use so you have less snaging.

Also, check your last 50m of line. Beach fishing is very hard on line and damage is common. Learn and use the platted double or easier joining knot the Albright which will provide stronger joins.

Perhaps other lines of improvement will follow this post. Good luck, and tight lines.

I have never a shock leader or double and do not have any idea on how to tie one, not that I'm thinking of learning.

Just tied the paternoster rig top swivel straight to the main line. The rig usually consists of 40lb main to the sinker and the same for the droppers.

The heaviest line that I've used on a rod off the beach is 30lb mono and that has allowed me to land heaps of fish that triple the breaking strain and sharks to over a hundred lbs with a catch ratio well in my favour.

The only time this changes is when I know there is a possibility of snags and so will reduce the sinker trace down to around 15lb because I would rather lose a sinker than the whole rig.

Off a boat its the same thing, paternoster rig straight on to the main line, usually between 40-80lb braid or trolling, main line straight to the swivel on the end of metre long wire or 100lb mono trace. Rarely use a gaff to land fish, just grab the top of thr trace and lift it in, with a double header, same way except you also grab where the bottom dropper joins to share the load.

Thanks for the info guys, I think the main problem is the pulley rig that I prefer to use, as its all connected, cant have the weight attached to a low breaking strain line as when it goes, the rig goes. The simplest solution for me is just to change to a different paternoster style rig, and have a lot lighter line on the weight as its independent to the rest of the rig. I fished that way when I used to live in the UK and to be honest didnt have many problems with it, just used a 5lb line to the weight and any snags just gave it a good tug and got my rig back minus the weight. I think the reason I prefer the pulley rig is that I tend to use impact clips when casting and as its a pulley, when Im hooked up to the impact clip (which is attached to the weight) with the treble on my gang, it pulls everything together and keeps it all streamlined which I believe does aid in both casting distance and accuracy a fair bit. I might go back to a regular paternoster though depending on how tommorow nights session goes!

 as far as shock leader goes, imo it not only takes the shock away from the braid on the strike , it also protects the braid a bit from rubbing against reefs and rocky bottoms. mono is more scuff resistant than braided line.

 Thanks for all the replies guys, cuthbad I think I'll give your idea a go, cheers mate!