Will the TZtouch be able to scroll back on the fish finder to get the GPS data? Its a feature that nobeltec and simrad has. Good to be able to go back in history to find the location of bait fish that was driven over.
I am not aware of any log file feature. It might be possible with MaxSea Explorer software connected if you have the new PBG module. (Since it builds bathy data) I would have to check if it would print out a standard Log file of the depth based on time and location. I don't think you will have a feature like this within TZtouch at least initially.