I assume the difference between .14-.20 is 10-20lb test.We pay attention to the dive curves for all the gear we run.I agree if we were off 4ft in the depths we were running,could affect our catch rate.That diff in diameter,long leads and 2 mph is at the high end.The Maxima line we run is 15 lb test and .15 diam.We have mosly fished with leads closer to 50 and rarely go over 2 mph.I would say my line at most is 1ft higher than the dive curves says for rigs were running.I was considering getting 10lb test for all our rods,so we would be right on with the dive curves.I though the difference in diameter not worth trade off for the weaker line.Was afraid that Nick's in line would increase loss of fish and or Nicholas Zart told me they use 12lb Maxima on his father's boat.I was spooling and calibrating for a new troller.Went with the heavier line.