Coccobill,
Most people don't use brush buttons or moleskin on longbows But there are other methods to quiet a longbow starting with the correct arrows, brace height, string silencers, Padding the loops with wool yarn or other methods and about a dozen more ways but there are some longbows that shoot great with nothing but the string...Try setting your brace height a little higher or lower and work with different sized arrows matched up to your bow...Tell some folks here what kind of bow your shooting and someone might be able to steer you in the right direction...Different string material also makes a lot of difference but make sure your bow is set up for it first..Now if you have a recurve and wanting to put moleskin between the limb and riser just be careful cause it could cause a wedge and damage the limbs according to how thick a pc. you put on...Some recurves have a very thin plastic pc. to cushion between the limb and riser but just putting some string wax or vasaline can keep the noise level down...Don't over tighten your limb bolts either just a good snug is all it takes and check often that they don't vibrate loose if shooting a lot... God Bless, Keefer's <")))><