Line depth Calculations - Forums
Striped Bass Fishing Site Map | Contact Us | Fishing Log Software | Fishing Online | Advertise
to UPLOAD: please register or login

Go Back Forums > MAIN FORUM DISCUSSION > Boaters Forum
Forgot Password? Register Now!!

Boaters Forum This forum is for boaters both fresh and saltwater. Trolling / Tips / Tactics / Maintenance

Thread Tools
Old 10-26-2005, 06:51 AM
Striperjim's Avatar
Striperjim Striperjim is offline
Registered User
Join Date: Mar 2004
Location: Planet Earth
Posts: 4,316
Default Line depth Calculations

Depth Calculator
George's Piefer's Fishing Lure Depth Indicator

sin(90) = 1, so the equation can be rewritten as Depth = Line Out x Sin(line angle). In addition, if you are flatline trolling, you will also need to add the distance from the rod tip to the water level into the equation as so: Depth = (Line Out x Sin(line angle)) - rod distance.

Table 1. Equations for depth calculations.

If your Angle is 5 Multiply Line out by 0.087
If your Angle is 10 Multiply Line out by 0.174
If your Angle is 15 Multiply Line out by 0.259
If your Angle is 20 Multiply Line out by 0.342
If your Angle is 25 Multiply Line out by 0.423
If your Angle is 30 Multiply Line out by 0.5
If your Angle is 35 Multiply Line out by 0.574
If your Angle is 40 Multiply Line out by 0.643
If your Angle is 45 Multiply Line out by 0.707
If your Angle is 50 Multiply Line out by 0.776
If your Angle is 55 Multiply Line out by 0.819
If your Angle is 60 Multiply Line out by 0.866
If your Angle is 65 Multiply Line out by 0.906
If your Angle is 70 Multiply Line out by 0.94
If your Angle is 75 Multiply Line out by 0.966
If your Angle is 80 Multiply Line out by 0.985
Reply With Quote
Sponsored Links
Old 02-25-2009, 07:55 PM
parker 28 parker 28 is offline
Join Date: Jan 2009
Posts: 5
Default Re: Line depth Calculations

i am new to this trolling,,, am i suppose to add 6 to 10 ounces (as the weight of the lure,, bucktails lets say?) along with the suggested inline weight as in the columns conforming to the size of the line i am using
Reply With Quote
Old 02-26-2009, 01:23 PM
Striperjim's Avatar
Striperjim Striperjim is offline
Registered User
Join Date: Mar 2004
Location: Planet Earth
Posts: 4,316
Default Re: Line depth Calculations

Hi parker
according to Georges chart he states that

The figures above (In his chart) include 2’ of depth for a medium weight lure, 6 to 10 ounces and a 30’ mono

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.
Reply With Quote


calculations, depth, line

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
New Shimano Stella SWB Coming Soon, Accepting Orders Now Pelagic Outfitters Sponsors 0 03-08-2013 04:05 PM
Terminology - Glossary of fishing terms McT Stripers 101 - Sticky Threads 13 05-24-2010 02:21 PM
Atlantic Coast (Part B) From Cape Fear, NC through Marquesas Keys, FL MarinersSchool Florida Stripers and Hybrids 0 01-14-2010 05:24 PM
Spinning Gear Tips Jigman Reels and Reel Maintenance 14 01-23-2009 09:42 AM
Equipment/tackle assistance please. wisey111 Stripers on the Fly 10 02-23-2007 06:58 PM

All times are GMT -4. The time now is 12:41 PM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright 2004 - 2013 LLC
Affiliated Sites: