Dennis, two other things:

1) I have found the best "overall" frequency for white bass hunting is 455 kHz. This will be true for Cedar Creek and Tawakoni. Generally speaking, high frequency renders good detail, while low frequency travels to greater depths and distances. We fisherman want to have our cake, and eat it, too. 455 kHz is a good compromise for seeing detail at depth and distance.

2) In order to get the best side-imaging returns, the operator MUST drive the boat slowly and in a straight line. By "slowly", I mean going as close as possible to the speed used when the transducer was leveled. By going in a straight line, objects, especially those at a distance, will appear proportionally correct. Failure to maintain a straight path will cause "smiling" or "frowning" returns, thus making linear objects appear curved, and skewing objects beyond recognition. This is best accomplished using your outboard in gear, but without giving it any throttle. Rarely can a boat be made to go straight enough to render high-quality side-imaging returns while under trolling motor power.

For these reasons, you should NOT expect clear side-imaging returns while sitting in one place on Spot-Lock, for example. While objects, including fish, will still show up, they will appear very long and very fuzzy, compared to the crisp, rice-grain-like signatures those same fish would render while your boat is traveling slow and straight forward.

Good luck with this!![i][/i]

Bob and Dennis
With regards to maintaining a straight line for better images. I often use the navigation feature on my
spot locking trolling motor, to hold a heading while I am underway with outboard idling in gear. I can keep up with
working downriggers, landing/ netting fish and even rig a pole or tie knots while underway
with the trolling motor acting as an autopilot. Works fabulous for netting at the back corner and keeping trolling lines from getting crossed and tangled while playing a fish. It brings a running fish right back to rear corner even on those
last runs hybrids make when they see the boat.