Craig...i like to fish flukes alot when im around smallmouth especially around points with small rock or grass...let it sink out of site then just work it back,jerk jerk pause,jerk jerk pause...i usually only throw them also when its pretty clear water so the fish can see it along ways a way,but for largemouth ive only had real good luck on them in prespawn and spawning periods...but other than that it sounds like your doing everything else right