This is what i think. And I'm not debating this, just my opinion. Being into weather there really hasn't been that many cold fronts go through and cold fronts effect the fisherman more than the fish I think. FISH ARE ALWAYS BITING. For example cold front comes through and the winds pick up. # 1 negative, that effect us. # 2 usually rain is associated with cold fronts. # 3 the barometric pressure rise's, but under three feet of water i think the actual pressure doesn't change hardly, so fish don't feel the pressure differance. There's alot of pressure in the water the deeper you go. That's why your told to bring fish up very slowly from deep water or there swim bladder will turn inside out and come out there mouth. I've seen that happen.
I think simply, if fishing is slow for you first it's LOCATION, second it's PRESENTATION, and fishing pressure sure does hurt no dought. Hey the guy yesterday caught most of the fish in this location so gee i'm not getting bit here.
Things i think will help, # 1 lite line (fool the fish) # 2 downsize, just try a 1/8 oz. jig married with a Berkley 3in Gulp Grub, or 3in. Power bait grub, in white, or pumpkin color, tied direct. Use 4lb. line and i won't say what kind. lol Work it slow and just off the bottom. You have nothing to lose trying this when what your doing is failing. But remember, LOCATION, LOCATION, LOCATION!!!! Be patient, 10% of the lake holds the fish.
h2o<--says down size when it's tuff out there.