Check out the www.infisherman.com web site and read the science doc section on thermoclines and preferred water temps of the various fish species.
Those stripes are out roaming the main lake's deeper waters searching for big schools of shad. That is their main forage I have read.
According to the US Army Corp of Engineers web site for Patoka lake the thermocline was around 16 ft on Patoka Lake on June 26th 2006. That was the last temp profile that I found on the COE web site.
You won't find too many big stripers below the thermocline where the oxygen levels are depleted at this time of the year. Hot summer months. So the key to catching big stripers is to put the baits where they are hanging out.
Down-riggers or planer boards and baits that can be set to go to 17ft deep are the key. Baits that mimic the gizzard shad that the stripers feed on should work best.
You will have to control the boat's speed, the type of line, the amount of line out behind the boat while trolling, and the type of bait trolled to put the baits at the right depth and at the right speed.
Use a GPS unit to measure your boat's speed. Use line counting reels to determine how much line is out behind the boat. Vary the type of baits and boat speed and amount of line out in known depths to determine if the baits can reach certain depths. Keep records of the variables and the depths reached for each bait and line type etc. After a while you should be able to put your baits and the right depth and at the right speed.
I would think that using small down-riggers to put the baits at the exact depth would be the best setup for stripers. With the heavy and streamlines cannon balls hanging straight down below the boat at a calibrated depth you can easily hook the fishing line to the ball using the quick release snaps and have the bait and the right depth. Now I am not sure if the stripers would be scared off by the boat's presence or not. If they are then using side planer boats to get the baits out to the side of the boat may be more appropriate. But then you have the problem of getting the baits down to the right depth.
Maybe the stripers are in the upper surface waters and if that's the case then trolling a shallow running crank bait or a Buck Perry small Spoon plug may be the ticket.
Trolling slowly with the big motor is the best way to cover lots of water and to find the fish faster. To slow the big motor down to less than 2.0 mph you may have to put on a trolling plate or throw out some wind socks or buckets tied to the back of the boat to slow you down. Two 5 gallon plastic buckets with a big hole in the bottom of the bucket may work. The drag created by pulling those buckets behind your boat should slow you down when you go to idle speed.
Use the GPS and or GPS digital maps to follow the old river bed while you troll across the lake.
I found some good rod holders at Dick's Sporting Goods Store in Evansville, IN. They appear to be made out of heavy duty plastic that has fibers embedded inside the plastic for reinforcement. They will hold a good bait casting rod and reel with a 300 bandit being trolled.
Regards,
Moose1am



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