Humminbird Updates

[walleyes n whitetails]

I see in the new updates that you can adjust the water level and highlight selected depths on the lakemaster maps... does anyone know if you those new updates allow the same for navionics maps?

[1shooter]

From what I understand the are LakeMaster exclusive features.

[Jason Halfen]

That's correct. The software update will allow you to use the Humminbird-exclusive features of the Lakemaster product; these are not found in Navionics chips.

[troutbum13]

I have often wondered why the GPS units don't sense the altitude on the water and set the lake level accordingly. I fish in the west where we see huge water level differences throughout the year. Would be nice to see the maps self-correct.

[nwpaconcours]

I have often wondered why the GPS units don't sense the altitude on the water and set the lake level accordingly. I fish in the west where we see huge water level differences throughout the year. Would be nice to see the maps self-correct.

GPS-driven altitude is less accurate than lat/lon position. If your GPS guesses that the lake must be 20 (or 30 or 40 or...) feet deeper than before and it's not, well....

Let's just say, I'd rather be in control of something like adjusting the lake depth.

[troutbum13]

As long as you have enough satellites connected. elevation is very accurate in my experience in SAR and backpacking. There is no reason for elevation to be less accurate than lat & long.

I don't disagree that it is better for you to make the final adjustments, but this seems like a no brainer feature when you combine todays GPS units with detailed lake maps. lake master doesn't cover my region, so I can't adjust it anyway.

But if there is some product manager at humminbird looking for features to add....

[nwpaconcours]

Perhaps, and it's an intriguing idea. But everything I've read says that vertical accuracy is assumed to be 1.5 times less accurate than horizontal accuracy. So if the horizontal accuracy is +/- 10 feet then your vertical accuracy is (loosely) +/- 15 feet, which is a 30 foot range. (And your right, it takes more sat locks to determine vertical position than horizontal)

That's a lot of variance for the purposes of determining how much water is under your prop.

Interesting idea though!

[troutbum13]

just for the sake of discussion, even if you did not rely on the accuracy of the elevation from the GPS, the software could sample the actual depth vs the mapped depth in several spots and then make a preliminary correction, it could still allow the user to fine tune.

I agree it could get tricky, but as it stands now my map is just as sketchy, the water is so low on one of my lakes that much of the map that shows lake is beach.

Anyway still a great product, and I would settle for the ability to adjust manually, sounds like a good addition to the lakemaster maps.