Merc, I have had my electronics for a year now. I have a “797 c2 SI Combo NVB” at the console and a “787 c2 Combo NVB” on the bow. I also have the external antenna with the AS Interlink to network the two together. The detail in the picture is unbelievable. You can see so much structure on the bottom it is stupid. It is like starting fishing all over again. The link posted above by gump has some good info on it. You can also go to Yahoo on their message boards and find great info from users and pics of actual items people have posted. The Nay Sayers don’t like theirs because they do not take the time to read the instruction book (and by book I mean 1” thick book) on how to properly set the system up. It will take a few hours on the water to set everything to your liking. And still you will change everything again to improve it. I spent about 6-7 hours total and got this system dialed in tight (to my liking).

Fishalltime, Putting a SI model at the bow is possible the only problem is as you change direction so will the image. Meaning if you are following the bank and move to you right a little, your image will now be of the middle of the lake, not the bank, and will display that way until you go straight again. That’s why Humminbird does not recommend the SI model for TM’s.

Anyway I love mine and would not trade any other electronics for it. No I am not a Humminbird sales rep, I just did a lot of homework before buying anything.