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Trolling depth estimator

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  • Latest Version:

    Trolling depth estimator LATEST

  • Requirements:

    Windows XP / Vista / Windows 7 / Windows 8

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  • Old Versions:

  • Trolling depth calculator

    Approximate Depths of Lures

    1

    2

    3

    4

    5

    6

    7

    8

    9

    10

    11

    12

    10’

    50’

    4oz

    5oz

    75’

    3oz

    100’

    2oz

    150’

    1oz

    15’

    50’

    10oz

    5oz

    9oz

    5oz

    5oz

    6oz

    1oz

    2oz

    3oz

    3oz

    75’

    8oz

    2oz

    5oz

    3oz

    2oz

    4oz

    1oz

    1oz

    100’

    6oz

    15oz

    2oz

    1oz

    3oz

    150’

    5oz

    200’

    4oz

    20’

    50’

    16oz

    11oz

    16oz

    10oz

    10oz

    11oz

    6oz

    7oz

    8oz

    9oz

    75’

    12oz

    6oz

    11oz

    7oz

    6oz

    8oz

    30z

    4oz

    4oz

    5oz

    100’

    10oz

    4oz

    7oz

    5oz

    5oz

    6oz

    1oz

    2oz

    3oz

    3oz

    150’

    8oz

    1oz

    3oz

    3oz

    5oz

    1oz

    1oz

    200’

    7oz

    25’

    50’

    23oz

    17oz

    23oz

    15oz

    15oz

    17oz

    11oz

    12oz

    13oz

    14oz

    75’

    18oz

    12oz

    17oz

    10oz

    10oz

    12oz

    6oz

    7oz

    8oz

    9oz

    100’

    15oz

    8oz

    13oz

    8oz

    8oz

    10oz

    4oz

    5oz

    5oz

    6oz

    150’

    12oz

    3oz

    6oz

    6oz

    5oz

    7oz

    2oz

    3oz

    3oz

    3oz

    200’

    10oz

    1oz

    5oz

    4oz

    6oz

    1oz

    1oz

    2oz

    2oz

    35’

    100’

    24oz

    16oz

    24oz

    15oz

    14oz

    16oz

    9oz

    11oz

    12oz

    12oz

    150’

    20oz

    10oz

    16oz

    12oz

    10oz

    13oz

    6oz

    7oz

    8oz

    8oz

    200’

    18oz

    6oz

    11oz

    10oz

    9oz

    11oz

    4oz

    5oz

    6oz

    6oz

    40’

    150’

    24oz

    14oz

    22oz

    14oz

    12oz

    16oz

    8oz

    9oz

    10oz

    11oz

    200’

    20oz

    10oz

    16oz

    12oz

    11oz

    13oz

    6oz

    7oz

    8oz

    8oz

    50’

    100’

    20oz

    12oz

    18oz

    12oz

    11oz

    13oz

    7oz

    8oz

    8oz

    9oz

    150’

    16oz

    6oz

    11oz

    8oz

    8oz

    10oz

    4oz

    5oz

    6oz

    6oz

    200’

    14oz

    3oz

    6oz

    7oz

    7oz

    9oz

    2oz

    3oz

    4oz

    4oz

    KEY:

    1. depth of indication on fish finder

    2. trolling line length

    3. 40 #mono dia. .033

    4. wire dia. .020

    5. 35 #lead core dia. .033

    6. 35 #Spectron dia. .0165

    7. 30 # Fire line dia. .015

    8. 50 #Fire line dia. .019

    9. 30 # Spiderwire dia. .009

    10. 40 # Spiderwire dia. .011

    11. 50 # Spiderwire dia. .012

    12. 60 # Spiderwire dia. .013

    The figures above include 2’ of depth for a medium weight lure, 6 to 10 ounces and a 30’ mono leader. Add 1-2’ for a heavy lure, eg. A MoJo and subtract 1’ for a light lure below 6oz/ Fine-tuning as components change, eg. 12’ fluorocarbon leaders vs. 30’ mono can only be done through experience. Depths are for a boat speed of 3mph. For 2.5 mph multiply depth by 1.3 and for 3.5 mph by 0.8.


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