FITMENT TOOL · NO ACCOUNT REQUIRED

Trolling shaft measurement helper.

Record mounting-surface height and browse published Minn Kota bow-mount shaft-length ranges.

**Where to measure a trolling motor**The dimension from mounting surface to waterline is separate from lower-unit submergence and total shaft length. Use the model-specific manufacturer chart and rough-water allowances.Reference: Minn Kota — motor selection and shaft guide

INTERACTIVE CALCULATOR

Adjust the inputs. Estimates update instantly; nothing is uploaded.

Mounting surface above loaded waterlineinMounting typeFishing conditionsControl arrangement

YOUR ESTIMATE

Enter measurements to see the calculation.

How it works

Records the actual mounting-to-water measurement and presents a manufacturer chart. Additions are based on Minn Kota notes and are not a universal shaft-length formula.

Important limitation

Different manufacturers define measured shaft length differently. Use the exact current model-specific chart; there are gaps between some published recommendation ranges.

IF YOU WANT THE WHOLE STORY

The math is the beginning.

The wrong shaft length is the kind of mistake that becomes obvious only after the box is empty and the return window is closing.

Read the companion guide

PUT THE RESULT TO WORK

Terrova: select the configuration after measuring the bow

Minn Kota’s Terrova family lets you compare real shaft and power configurations, but the family name alone is not an order specification. Measure from the actual mounting surface to the loaded waterline and allow for the operating conditions using Minn Kota’s selection guidance.

Read the buying guide →