Larger lures can work better...
My local man made lake is 13' max near the dam end, averages 8' for 3/4 and 5' or less the rest. There are quite a few stumps, humps and flats as well as rock piles. Weeds carpet the bottom for most of the lake yet seeing as how thick they are fish are caught between their tops and the surface. Water temperature has been a balmy 79.9 degrees and weather windy to dead calm and skies sunny to overcast with rain.
Unlike in previous years of weekly stable, sunny conditions, the lake's environment changes sometimes daily, throwing off a previous day's bite to something/somewhere quite different. What I've found interesting is that larger lures and jigheads have been working. (IMO Larger jigheads cast better and further into the wind and larger lures present larger profiles that fish may see better further away) Other than white or pearl, I always pore my crappie lures with glitter.
That said, I've gone from 1/16 to 1/8 oz round head jigs and from 2.5" to 2.75-3" length minnow type lures.
http://i76.photobucket.com/albums/j3...s.jpg~original
The retrieve rate is the same on the long casts for 1/8 and 1/16 oz. I still use a fluorocarbon leader regardless of lure size believing the lure acts better than on straight braid. Even 4" crappie have been getting hooked on 3" lures (the one shown). I guess part of me believes that the bigger the fish, the more apt to attack a larger animal / lure aggressively.
Each time I go out, I average over 35 fish and usually over 50 because the fish in this lake school by size and by species. If I catch 7" crappie in a school and that's all I will be catching; catch 10.5" and ditto for 10.5". I prefer this much smaller lake than another 4x as big, because I have a lot less water to eliminate resulting in catching more fish per hour and being able to experiment with different lure types and sizes.
It's been a great year this a county lake that sees quite a bit of pressure annually and has been far better than last year where a drought lasted most of the year. Hopefully another favorite public lake will open soon because the crappie and yellow perch reach 12" the the bottom is just as varied.