If you have bought yourself an echo sounder with built-in GPS then there is a seriously useful bolt-on that you can add to it that won't cost you a penny, but which can give you some fascinating insights into why certain areas and spots are better than others.
I'm talking about adding topographical maps showing the underwater contours of your favourite fisheries to your sounder that can be accessed whilst you are out on the water. Such maps don't exist for every waterbody yet, especially in the UK, but there are enough to get started and it is easy to record your own.
Until recently you normally had to pay for software to create maps. My buddy and I... Continue reading