Next you want to troll backwards if you are in a motorboat so that you are moving as slow as you can. This method requires a small fishing boat with a motor that is 25hp or smaller. A 15hp or 9.9hp motor is perfect. A big boat with a big motor trolls too fast and the only effective way to fish deep at high speed is with expensive downriggers. A bigger boat can also use an electric motor or a small kicker motor to troll slow. The very best way to troll for trout is in a canoe. Canoes are so quiet that I have found you get way more strikes. To fish for trout in some of our backcountry lakes you have to be in a canoe. In a canoe you need two people and the person in the front has to sit backwards. The person in the front needs to paddle backwards while the person in the back drops their line and then visa-versa. You have to work as a team because the canoe cannot stop moving while your rigs are in the water or they will get tangled. You want to paddle just fast enough that the lure is working.
Next you want to slowly drop your line down 50 feet. You can slowly reel backwards but not too fast or the rig will get tangled. You have to be moving when you drop the rig down. Do not cast the rig! On most spinning reels a full turn of the handle is a little more than one foot of line. If you reel backwards 50 times your lure should be down around 50 feet as the line will be on an angle. You also want to use thin line so it slices through the water and your rig is almost straight down. If you use thick line there is too much friction with the water and you have to go to a bigger weight, which defeats the purpose. I and my fishing buddies have caught plenty of Lake Trout in the 15 to 20 pound range with 6-pound test. You just need to set your drag at the appropriate resistance for 6-pound test. If you can troll really slowly then you can use 8-pound test and if that's what you already have on your reel for Walleye and bass fishing then so be it. It's better to use 6-pound. Visibility is also a factor so try to use dark color line. I like to use the Trilene XT Dark Green monofilament 6-pound test because it slices through the water, it's strong and it does not stretch and twist as much as other thin lines. In the smaller spring-fed backcountry lakes the trout may be shallower in the 30 to 35-foot range during the summer so you only need a 1-oz. weight. Brook Trout and Aurora Trout will be much shallower than Lake Trout or Slake.
You have to set the hook and reel in as soon as you get a bite. People seem to have the habit of hesitating to let the fish take the bait, which means you will lose the trout. Strikes sometime feel really light and there is no way of knowing how big the fish is until you start reeling in. I have had 10 pound trout bite like they are minnows and others that almost pulled the rod out of my hands. You have to treat every bite like it's a big fish.
This method is also great for trolling just off shore in 20 feet of water with a worm harness for big trophy Walleyes. In the fall you can also get into some really big Smallmouth Bass and Northern Pike down 30 to 40 feet.
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