nothing wrong with red ice mate, used 30lb red ice straight through on rock marks all over n.e and arbroath / aberdeen etc, haven't lost a fish or gear due to the line.
if it's frayed when you bring it in change it, check all knots before every chuck, not rocket science
to be honest i used gerry's mono for years, 3 spools for a tenner, which is good as anything.
if your fishing rock marks your going to lose gear, better off using cheap stuff on rocks, get better stuff for lighter work / cleaner ground.
personally i think it all get's a bit tackle tartish. ultimo / sensor /blah blah blah....catching the angler not the fish...........