G'day, frend. Recently I was touched with a not simple problem.
I want to go fishing along the sea coast. Before that, I only fished in familiar places or uncovered ponds and always knew where to eat fish and where not. But now I can not know for sure where she is. I was advised to buy a fishfinder but I do not know how to read a fishfinder. Someone will tell me a good article or source where you can read it? Something like this :