My flats outfits have 3lb powerpro braid and 4lb fc rock leader and I rarely lose a lure but I constantly check my leader after every fish and if I've had to drag it through a bit of weed I also change my leader before every trip and use a slim beauty knot as I haven't felt the need to change to any other A mate of mine swears by 2lb fireline he loves it for flats and weed edges