Summer sunshine in August is often a sure sign that the fish will not bite during the day. Most anglers switch to night fishing or at least early morning and late evening. That is not the whole story.
If you adapt your program you might catch some nice fish.
In southern Missouri and Illinois, fishing 90-degree water calls for a change of tactic. These southern lakes and ponds contain smallmouth bass, largemouth bass, white bass, walleye, crappie, bluegill and some assorted sunfish.
I recently was introduced to a new pattern for these suspended cats.
Lakes and rivers experience a thermocline effect in the water during the hot summer months. The water below that level lacks adequate oxygen for most species of fish. As a result most fish suspend above the thermocline which is usually at a depth of about 20-feet.
The thermocline is a band of water in which the temperature is 5- to 10-degrees cooler than the water above. Below this band the water is even cooler. The fish will be in the water above the thermocline all summer but tend to hang close to it.
Catfish are usually at about 20-foot depth and with other species above them. They relate to any structure at those depths. For instance humps and sunken islands attract catfish. These fish are active in hot weather contrary to popular belief.
The shad in a lake will be in the top section of the water column driven there by white bass. Seagulls fly over the shad breaking the surface. It is the presence of the birds that alerts fishermen to the presence of potential action. Below the white bass is where the catfish lurk.
All the traditional catfish baits and lures will work in August just as they do the year around. Channel catfish will take almost anything but the blues and flatheads prefer live bait such as a sunfish or shad. It is important to place the bait/lure at the right depth. The slip bobber rig is a good choice to keep the bait off the bottom. In the case of crankbaits one can count down to a desired depth before retrieving the lure. A deep diving crankbait trolled at 2-miles per hour should run at about 18-feet down.
Crankbaits in shad imitation shapes and colors work in clear water. In rivers work the slack water behind structure as well as hollowed out holes in the bottom. There is more current above them and less down deep in the hole. In river situations you probably will have to travel more to find schools of fish.
As for color in the use of crankbaits adjust according to water clarity. Murky water calls for orange, chartreuse or yellow fire tiger baits. In clear water you can use blue or the more natural colors including brown and black.