Power pro is much thinner than fireline pound for pound.. for example, I hve 20 lb fire line on my schoolie rod and its a tad thicker in diameter than the 50lb powerpro on my cow stick. All my cuts on my index finder are always on the inside of my knuckle and they come from either tightening knots or pulling agianst my drag to get some line out of the reel... All on the power pro, none form the fireline
