Sonar,
2nd pic. after I have been up and down the area I am interested in or drifted over it half a dozen times while fishing slightly spaced drifts do I have to save track on my 987C and then export??
The reason for using sd card / home pc is so i can correct for tidal data with WXtide32 the tide range here is 12m so in the shallows makes a MASSIVE difference.
I am sure it may make more sense after a play on the water and some patience.
1st Pic, I know i need to start / save a recording then put this into Dr Depth for mozaic of side scan
rgds