After talking with many anglers, I realize that very few of those who are equipped with a sounder know correctly read and interpret the meaning. For the most part, they only use it to read the depth and get a sense of relief ... but are lost when it comes to identifying small echoes, whether it is fish or not and are even more bums to successfully determine the species.
In short, I just created a topic on the forum to offer you post screenshots of interesting voss pollsters (you understand what is on or not) to open a debate on the significance of these images. I think there's a lot to share in this area and that a forum is a very nice tool for that.
You will find complete information about this project here: http://www.pecheaubar.com/punbb/viewtopic.php?id=27089
I need some good will to start the machine, so if you have some nice screenshots. in stock, you know what you have to do.