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

MaskedFisherDude · 03-20-2019, 08:53 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, 12:52 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, 08:18 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.

03-20-2019, 08:53 AM	#1
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, 12:52 PM	#2
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, 08:18 PM	#3
jbl_91762 Senior Member Join Date: Jun 2016 Posts: 348	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.