Nativebrookie.................ants , my favorite trout fly , they love 'em , i don't know exactly why but they do , ryguyfi's suggestion of the foam is right on the mark , that is my favorite version , heck , when i first tied the foam version most fly fishers were using the McMurray ant , Harry Murray's balsa wood and mono version , that was a while ago. As for a hard , sinking version of the ant , try this one , it's also old , use the standard , glossy floss , sold in fly shops for floss bodies , build up your ant body and when you are done (before hackle) dip the entire fly into acetone or nail polish remover , set aside and let it dry and harden , after everything dries and hardens go back and add a few wraps of hackle. This hard , sinking version is old but good. HAVE FUN N GOOD LUCK.