Weedless

I fish a windy lake 2-4 times a week. I mainly fish thick/weedy flats (7'-14') with a texas rig black/blue flake senko worm. I have pretty good success in decent fish for the lake (i tourney fish it every other sat and usually place in 4th through 6th, except for last week I got my first 1st place!!! there are usually 30 fisherman in tourney) I consider my self a "grinder" cuz i will fish a weed flat all day. Anyhow, black with blue flake works 10 times better then any other colors. Other colors work, watermelon, brownish, pumpkinseed barely, but nothing like junebug, black, and black with blue flake no matter water clarity and weather conditions. I finally tried to fish these some of the drop-offs from these flats and caught the lunker of the tourney at about 16' on a drop off, but i did it with a texas rig black/blue flake senko worm. I feel like there are better lures and rigs to fish these drop offs. Also, how to fish them, from deep up to flat or flat to deep??I believe that the bigger fish are deeper at the cooler water at this point in the season. Could some one give me some advice? Also, why do you think even on the brightest and sunniest days to the darkest cloudiest days the bass go for the black? To be honest, i just want to find another technique that is only half as good as what i currently do just to mix it up. There also is a veteran guy there that mainly fishes cranks and he rarely does well, and I hardly do well with cranking too.Thanks.