Ideal speed for sonar to work? - Kayak Fishing Adventures on Big Water’s Edge

jbl_91762 · 03-19-2019, 08:03 PM

So after watching some vids on fish finders, Im gonna pull the trigger on a Lowrance Elite 7ti to replace my old Garmin Striker for my outback. I hope the 7" screen wont be too big and get in the way.... Anyhow I was watching a vid and a user said ideal speed in a boat is 3-4 mph for the DI and SI features to work the best. Well thats a pretty good clip for a kayak which the Outback has no problem doing but thats moving good. So what are your insights to this ideal speed as I cant find a vid on a yaker using it. Thanks

MaskedFisherDude · 03-20-2019, 09:53 AM

For DI and SI faster you will get a clearer picture but it’s definitely not a problem if your going 1-2 mph. I have a HDS 7 on my PA and wouldn’t go any smaller. I usually run DI,SI and normal 2d sonar on the same page so I have a really good view of what’s going on around me.

GregAndrew · 03-20-2019, 01:52 PM

The speed recommendation is probably based on when you are using the SI and DI for mapping. It is slow enough not to miss anything, but fast enough to dilute the errors from cross wind and current. Your transducer will always assume that you are traveling straight in the direction your GPS shows. If you have some drift from wind or current, the SI and DI will have some error. If you were paddling backwards, the SI and DI would show exactly opposite (right is left and left is right).

jbl_91762 · 03-20-2019, 09:18 PM

Thanks guys that helps!!! Im wasnt sure if I'd be upset after spending $500 on new FF but I cant wait to get it.

adalah · 03-26-2019, 12:02 PM

interesting thread, I had the same question

jbl_91762 · 03-26-2019, 07:44 PM

Well I bought the Garmin Echomap Plus 73sv which was on sale at BPS. Im hoping to get on the water this Saturday at NPH and will post up my results. Keep in mind I have no experience with this level of FF so Im excited and scared at the same time. Youtube has been my friend nightly!

Salty Irons · 03-28-2019, 11:29 AM

Just wondering if you got the 7ti with the total scan transducer cuz I was looking into them and was wondering the difference it made if anyone has any experience with it

Sent from my SM-G965U using Tapatalk

No Losses · 03-29-2019, 11:52 AM

I have the same Garmin 73sv FF. It is a great model. I keep having problems with mine losing connection to transducer.
Beside that, it is amazing.

goldenglory18 · 04-01-2019, 07:45 AM

Quote:

Originally Posted by No Losses

I have the same Garmin 73sv FF. It is a great model. I keep having problems with mine losing connection to transducer.
Beside that, it is amazing.

Huh? How is it a great unit other than it works intermittently?

03-19-2019, 08:03 PM	#1
jbl_91762 Senior Member Join Date: Jun 2016 Posts: 347	Ideal speed for sonar to work? So after watching some vids on fish finders, Im gonna pull the trigger on a Lowrance Elite 7ti to replace my old Garmin Striker for my outback. I hope the 7" screen wont be too big and get in the way.... Anyhow I was watching a vid and a user said ideal speed in a boat is 3-4 mph for the DI and SI features to work the best. Well thats a pretty good clip for a kayak which the Outback has no problem doing but thats moving good. So what are your insights to this ideal speed as I cant find a vid on a yaker using it. Thanks

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03-20-2019, 09:53 AM	#2
MaskedFisherDude Member Join Date: May 2018 Location: Mission Viejo Posts: 39	For DI and SI faster you will get a clearer picture but it’s definitely not a problem if your going 1-2 mph. I have a HDS 7 on my PA and wouldn’t go any smaller. I usually run DI,SI and normal 2d sonar on the same page so I have a really good view of what’s going on around me.

03-20-2019, 01:52 PM	#3
GregAndrew Senior Member Join Date: Mar 2009 Posts: 2,384	The speed recommendation is probably based on when you are using the SI and DI for mapping. It is slow enough not to miss anything, but fast enough to dilute the errors from cross wind and current. Your transducer will always assume that you are traveling straight in the direction your GPS shows. If you have some drift from wind or current, the SI and DI will have some error. If you were paddling backwards, the SI and DI would show exactly opposite (right is left and left is right).

03-20-2019, 09:18 PM	#4
jbl_91762 Senior Member Join Date: Jun 2016 Posts: 347	Thanks guys that helps!!! Im wasnt sure if I'd be upset after spending $500 on new FF but I cant wait to get it.

03-26-2019, 12:02 PM	#5
adalah Junior Join Date: Feb 2019 Posts: 4	interesting thread, I had the same question

03-26-2019, 07:44 PM	#6
jbl_91762 Senior Member Join Date: Jun 2016 Posts: 347	Well I bought the Garmin Echomap Plus 73sv which was on sale at BPS. Im hoping to get on the water this Saturday at NPH and will post up my results. Keep in mind I have no experience with this level of FF so Im excited and scared at the same time. Youtube has been my friend nightly!

03-28-2019, 11:29 AM	#7
Salty Irons Junior Join Date: Jul 2018 Posts: 9	Just wondering if you got the 7ti with the total scan transducer cuz I was looking into them and was wondering the difference it made if anyone has any experience with it Sent from my SM-G965U using Tapatalk

03-29-2019, 11:52 AM	#8
No Losses Junior Join Date: Sep 2018 Posts: 13	I have the same Garmin 73sv FF. It is a great model. I keep having problems with mine losing connection to transducer. Beside that, it is amazing.