The action remains when line diameter changes

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Increasing or decreasing your line diameter can have major affects on many crankbaits, but I’ve found that it doesn’t hamper the action of the RkCrawler MD 55 very much. If you want to touch the 8 or even the 9-foot zone on a long cast, I’d suggest using 12-pound fluorocarbon. If you’ll be targeting shallower docks, riprap and laydowns, don’t be afraid to rig it on 15-pound fluorocarbon. You’ll still achieve that pronounced tail waggle and hunting action, but the larger diameter will allow you to fish the crankbait a bit shallower without sacrificing retrieve speed.