When fishing with light-tackle, drag pressure, line diameter and chaffing are all aspects that make this type of fishing so challenging. Chaffing is one of the biggest issues that light-tackle anglers encounter when targeting larger species of fish on both fly and conventional tackle. Increasing the diameter of the line or tippet by using a protective sleeve (or other device) negates the risk of chaffing and therefore gives the angler an unfair advantage over the fish. Therefore, IGFA rules prevent anglers from using any sort of anti-chaffing guard over their class tippet, mainline or backing.