Yeah, then you can buy it,lol.

I personally don't use the 800kHz due to it's more limited coverage area versus the 455kHz; but I was playing around a little today and scanning the river bed and flipped to 800kHz and got some interesting images. Might have to start playing with it more as it offers a different view of the underwater world. Check out these images of the old river channel below one of my local lakes.

What do People Look Like?

Here is Humminbird Marketing Manager getting Side Imaging Picture Taken:





You can see the Scuba Flippers and even air bubbles coming out of his mouth.

Adjusting Scroll Speed Opens up the Details

Matching the Chart/Scroll Speed to the Boat Speed will keep the image returns in perspective as you would see under the water but one of the interesting tools is to adjust the Chart Speed to Open up the Details in the image like finding fish in the tree branches an increased scroll speed can open up the tree and make it easier to find fish amongst the network of tree branches. Look at these images below and watch how changing the scroll speed can be beneficial in helping find fish within the trees.

Chart Speed 3 - Matched to Boat Speed



Chart Speed 4 - Trees open up a little



Chart Speed 5 - Trees Open Even Wider and Fish are Becoming Easier to See



Chart Speed 6 - Tree Branches are open even wider and make it easier to separate the fish from the branches



This is a function and feature that Humminbird offers the user the ability to control chart/scroll speed to allow the user to gather the data they need to be successful. Understanding how it works will help you find and locate more fish. Changing Chart/Scroll Speed Faster will distort the images "real world perspective" but if you are looking for fish within structure it is a very useful tool to help you get the most out of your investment.

What setting was sharpness on?

In the above image I was not using any SI enhance Sharpness. But that is another tool that can help and used in conjunction with scroll speed tohelp locate fish.

Is is possible on down imaging or conventional 2d sonar to actually see my bait relative to fish location?

If you are jigging for example a spoon or jig directly below you then yes you should be able to watch your bait on the graph in relation to the fish. I'm not sure if di will show, I don't own one yet but I have caught many fish by trolling around, graphing fish and then dropping a bait to them. This is the best way to use a drop shot rig, graph them and catch them.

Switchfire 2D it works great vertical fishing seeing your bait. I recommend Switchfire MAX Mode and selecting 200/83 kHz combines sonar setting to see your bait easier.

Down Imaging has such a narrow beam width (front to rear) that it is very difficult to keep your bait in the beam...more luck than skill. That is why 2D Soanr is so important because it is the best choice for vertical fishing and why Humminbird offers 2D sonar with it's DI units.

Can I transsom mount my transducer for a 788ci HD DI Combo on a 96 Ranger 461 VS? Because of the variable setback on the VS models I don't see an area that is perpendicular to the water surface. Plus you have two steps to deal with. Really wanted to be able to take advantage of temperature.

You will need to mount where the hull meets the transom if you want ALL Speed Readings for Sonar. Anything above the bottom of the transom will not read on plane.

Thank you Doug. I found a picture on the Hummingbird website as to where they are mounting on the Rangers with variable setbacks. I will wait until it cools off and get busy.

i just got back in from being out in boston harbor and the charles river and recorded a lot of data for fun. the images while out on the water were sweet, got a real awesome shot of a bait ball and its shadow and a lot of structures. when i grab some screen shots i will post them.

I have a Huminbird 998SI I want to add a transducer in the hull so with the y cable so I can have depth reading while on plane. My question is the puck I have has temp built in and so does the SI transducer. I want the temp reading from the SI not the puck in the hull, how is this acomplished?

With the AS SIDB Y cable, the temp circuit comes from the SI transducer. There is no electrical path on the 2D transducer side of the cable for temp.