In thicker leader line, it becomes quite tricky to put 3 loops in. In hard/stiff line like Maxima, it doesn't work very well. But with softer lines like Sufix Zippy, it's fine. I reckon 3 loops must be stronger (?), so if the line is workable, do 3 loops. I know that some of the WCape league anglers only use 2 loops - so whatever works for you.