What if some have a tranducer offset at 2.8m and someone has one at 300mm.....that has got to be a recipe for disaster if it gets shared publicly. Sounds dodgy to me unless it is kept to your own boat and device.
Came to matiatia to get water and tried on bottom of tide.... But yeah-nah!
A nice guy said grab my mooring and wait for an hour....good on him.
So we draw 2.8 and he was just there and showed 2.5
Anyway have a beer and chillax we will