My good friend and i have been using the same line now for a year and a half. with no real issues. we both have just relined our polls a few weeks ago. the line is off of the same spool as before, as we buy bulk line the same as a bait store would. the type of line is called tight line it is a salt water line, so it should stand up to all the abuse that a freshwater fisherman would put it through. we are using 40 lb test and the last two trips when setting the hooks or shortly after our line has been breaking. it doesn't make sense. mostly because it has been on 3 of the 4 rods that we fish with regularly and we have checked them for frays in the line. it cost me a 70 or so pounder last night (my friend saw it hit my bait and take off running and he really knows his stuff). I used to fish with spider line before, but i like the mono I've been using. does anyone have any suggestions?