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Thanks. It's a great product..

I'm really struggling. I have a 798si and can never mark fish. On side imaging, I'll sometimes pick up timber, but it's pretty weak. I've messed with sensitivity, chart speed, SI enhance. Everything. Can't see anything meaningful. Same thing on the regular sonar. Went with a guide and saw arches everywhere on his Lowrance. Same places with mine, and nothing. Still caught fish so I know they are there. I still pick up the bottom just fine. And on the regular sonar I'll generally get timber too. I just can't pick up anything that looks like a fish. Awhile ago the transducer got knocked off the bracket when we drifted into a stump, but it seems fine. It works just the same as it always has after getting knocked off. I've had this unit for about 18 months. I've moved the transducer lower on the transom too.

Anyone have any more ideas? It's really hard to fish deep when I can't see fish.

Thanks in advance.

Reduce coverage are on the 798c to 50 to 75 Foot make it easier to see on the 5" screen. Are you using 2D sonar? Use 200/83 kHz and Switchfire Max Mode.

bucky, "It's really hard to fish deep when I can't see fish."
How "deep" is your deep?

I get more than enough information with a 798ci SI using the 83/200 kHz setting and the default sensitivity setting of 10. I use the Switchfire Clear setting also.
This is a thermocline and fish with those settings.

One of the most awesome features of Side Imaging is the ability to mark waypoints away from the boat and the exact position with the 4Way Cursor. When you see fish or structure you want to mark just use the 4 Way Cursor and move over the structure you want to mark and hit the mark button and you have created a waypoint exactly on top of the structure not the boat position. In this image I have moved the cursor over the rock pile and you can see the Rock Pile Was 87.4 Foot to the Right of the boat Path and is current 155 feet away if I head 197 Degree Bearing from my current boat position.



One thing I like to do when I have a large area like a rock pile I want to fish is add multiple waypoints so I can see the complete outline on the GPS View so I can line up and fish the structure. The Red Dots would be an example of how I mark a Rock Pile or piece of structure so I can see the shape on the GPS View to make it easier to line-up to fish.



Here's a sample of the GPS VIEW I did on a rock pile...

Doug,

I have my unit hooked now but have some stuff going with left that I'm unable to get cleared up. Here is a photo shot. the right side looks good.

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Doug do you think moving my transducer can a little more to the right will help with the motor interference. I think the motor is giving me the dark lines on my left side. The other post above my post has the same dark lines on the left side of the image.

I'm trying to catch them in 22-30 feet. Thanks for the tips. I'll give them a shot!

Going to buy a Navionics chip for the 997C. Which one should I get? Thanks

South Premium for around here.

Thanks. Gonna shop for one.

Does you boat list to the right? Could be transducer shooting out of the water. I would equalize weight in the boat or tilt the transducer down a little on left side.

Also you have a little turbulence near the center but not ennough I would worry about in the water column.

Navionics Premium or Platinum work and LakeMaster too. LakeMaster has some neat exclusive features for Humminbird that let you customize your map. I would recommend looking at the lake list to decide which is best for you.

Doug
I just purchased the 898C. I am having a problem getting the transducer back to clear the motor unit.Left works great but I think I am shooting the motor on the right.

Is their a product to move the unit back say 12 inches!Do you have any photos of transducers mounted on pontoon boats?