One effective way to get a plug deep without excessive lead weights, or if you don't have a downrigger, is with a diving sinker such as the Deep Six , Pink Lady or directional Dipsy Diver . With a downrigger you will be able to work all depths and will have the advantage of no weights between you and the fish once hooked. The longer lengths add to the erratic, darting action of the plug. 1 Jensen Dodgers are recommended. Be sure to allow at least six feet of line between the dodger and downrigger line release so as not to inhibit the dodger's action.
Larger fish do prefer large plugs.
Big fish will spend the least amount of energy necessary to catch a meal . . . So, if you're after big salmon or lake trout, use the larger J-Plugs . But, remember that smaller fish often will not attack a large plug so the use of larger plugs, although great for big fish, may prevent you from catching smaller ones. Standard J-Plugs are popular because they are especially effective in deep water trolling situations, although, as indicated, they may be successfully used in medium or shallow water as well. Extreme heat can deform a plug's shape and direct sunlight can cause the finish to fade.