Trolling With Wire Line

Predicting Depths When Trolling Wire Line

On the water lure depth prediction is not very easy. The factors are complicated and change often.  As your boat travels over the water, the current  and direct are always changing.  As a boater travels up current the boat speed and current oppose, making the lures rise, when the boat reverses direction the 2 forces combine and lures sink. This action is ever changing.

Even a small increase in speed makes a big difference. One way to get a feel for things is to note boat speed and let a test weight out in a shallow area with a hard bottom. If the current is significant, you can easily see differences in how much line it takes to hold bottom when reversing direction. This only works at low speeds, perhaps 2-4 knots.

The table below is a good starting point for wire line. Other lines will react differently.

Wire Line Depth Table

length of wire from rod to lure

weight (oz.)

100.0

125.0

150.0

175.0

200.0

225.0

250.0

275.0

300.0

0.0

10.0

12.5

15.0

17.5

20.0

22.5

25.0

27.5

30.0

1.0

11.3

13.8

16.3

18.8

21.3

23.8

26.3

28.8

31.3

2.0

12.5

15.0

17.5

20.0

22.5

25.0

27.5

30.0

32.5

3.0

13.8

16.3

18.8

21.3

23.8

26.3

28.8

31.3

33.8

4.0

15.0

17.5

20.0

22.5

25.0

27.5

30.0

32.5

35.0

6.0

17.5

20.0

22.5

25.0

27.5

30.0

32.5

35.0

37.5

8.0

20.0

22.5

25.0

27.5

30.0

32.5

35.0

37.5

40.0

10.0

22.5

25.0

27.5

30.0

32.5

35.0

37.5

40.0

42.5

12.0

25.0

27.5

30.0

32.5

35.0

37.5

40.0

42.5

45.0

16.0

30.0

32.5

35.0

37.5

40.0

42.5

45.0

47.5

50.0

20.0

35.0

37.5

40.0

42.5

45.0

47.5

50.0

52.5

55.0

24.0

40.0

42.5

45.0

47.5

50.0

52.5

55.0

57.5

60.0

28.0

45.0

47.5

50.0

52.5

55.0

57.5

60.0

62.5

65.0