.55 will be heavier than you will need and also there will be guys on here far more pro than me when it comes to R&S to be honest, but I know my way around the park..Can read the water now and know my baits and have caught my fair share, ate fish last night and freezer can still feed me for a while so I have moved just above the beginner rung on the ladder now haha..
.50 will be a more all round line but to cast and fish either off a grinder will be a headache.
I don't fish a mainline less than that. Thing is in the sea you don't know what you will hook and with sharp reefs and barnacles and limpets and mussels and scales and scutes do don't know what your line will be up against. I hooked as many crackers this year with a little piece of redbait scratching for gallies, as I did gallies, with light gear there is no way I would have landed those fish. As it stands I lost only one that came off the hook while my mainline was jammed in the rocks and I was wading out in the dark under full moon to land him..
I've given up on braid for scratching, it is just too frustrating for me. When I do it is just a double overhand loop to swivel and then trace so that I leave minimum braid in the water. FG knots and braid leaders when scratching and getting stuck every second cast become tired quick.
Ja the double x extreme abrasion is gold
It all depends on where you are fishing too and the rocks and surf, sea shells in the sand banks can also cut thin line. In natal it will be different fish to eastern cape to western cape as well. Different line, different fish.. Scratching for gallies in cape town you can go light, except for the kelp making life difficult so guys go heavy, in eastern cape a big steenie, cracker or ray could pick you up when scratching for small fish and then you better be prepared or you will always be thinking about the one that got away..Like I used to..Now I get most out, touch wood..