PW1 when longlinning with heavier line you need to shorten up your cast and not let out more line as the heavier line will go deeper than lighter line. Most longlinners in SC use 8 to 10 lb test with about a 40 ft cast. If you need to go deeper then add small split-shot till you get to the right depth that the fish are biting. Always try to maintain the same length cast and control of depth by adding weight or removing weight. Remember crappie feed up and not down so you always want your jigs higher than the fish are at. If you have some spare time cut the point off of a couple jigs and practice pulling them at different speeds over a shallow flat until you can tell what depth your jigs are running at. I use 20 lb braid when pulling with good success. Hope this helps remember line size is not the controlling factor but depth of your presentation