Thread: Speed for DI

Not true at all. I have collected a WIDE variety of crystal clear Side and Down Images at speeds near or below 1 mph. Some are included below. The key is to adjust the chart speed to match your boat speed....whether you're moving slow or fast.

The first picture is a mixture of crappies and white bass, suspended in a big eddy. The second picture is a school of deep water crappie. The third picture is of a single fish sitting in a depression in the washboard bottom of a river.

Originally Posted by Jason Halfen #511

Not true at all. I have collected a WIDE variety of crystal clear Side and Down Images at speeds near or below 1 mph. Some are included below. The key is to adjust the chart speed to match your boat speed....whether you're moving slow or fast.

The first picture is a mixture of crappies and white bass, suspended in a big eddy. The second picture is a school of deep water crappie. The third picture is of a single fish sitting in a depression in the washboard bottom of a river.

My mistake...I thought I had seen this on several post....Thanks Jason

Originally Posted by DonG

It is my understanding that you have to travel at 3-5 mph to get a good picture with Humminbird SI-DI ...Is this also true for Lowrance...

If this is the case I can see no advantage of having SI-DI at the trolling motor...How many trolling motors will pull your boat at 3-5 mph?...Am I confused about this? I would really like to have DI at the trolling motor..

I think where the confusion has come in is where a guy asked on the board what is the optimum speed to get the best image. The response was 3 to 5 mph. We state for the best performance the speeds are 1 to 10 mph. We have a snap shot where we were traveling 26 mph and still getting an image. This all depends on the location of the transducer.

Originally Posted by Jason Halfen #511

Not true at all. I have collected a WIDE variety of crystal clear Side and Down Images at speeds near or below 1 mph. Some are included below. The key is to adjust the chart speed to match your boat speed....whether you're moving slow or fast.

The first picture is a mixture of crappies and white bass, suspended in a big eddy. The second picture is a school of deep water crappie. The third picture is of a single fish sitting in a depression in the washboard bottom of a river.

Jason...would you share your chart speed that you used for thes pics...??

Originally Posted by rnvinc

Jason...would you share your chart speed that you used for thes pics...??

At that GPS speed......my chart speed is most likely 1.

I rarely run a chart speed over 4.

Originally Posted by Jason Halfen #511

At that GPS speed......my chart speed is most likely 1.

I rarely run a chart speed over 4.

Yes, that about right as I usually run chart of 3 @ 3.0 -3.5mph & go down to 1 when trollin or drifting.

and I was moving at less than 1 MPH and sometimes ALMOST stationary, it would work?