Every pontoon will come with a detailed lake make showing the great spots to visit and anchor. However, we HIGHLY recommend and ask that you DOWNLOAD THE NAVIONICS APP BEFORE YOUR RENTAL. It is a valuable tool for navigation and shows the topography of the lake bottom (depth) in relation to where the boat is. It uses GPS so you will know exactly where you are on the lake and what the depth is below the boat! The App is free but you have to create a free trail account (it does not automatically charge your App Store account after trail ends). Once you create your account you’ll be given a small box where you can download a trail size map. Zoom the map box over Lake Wylie so it covers the whole lake and download that portion. Please do this before you arrive.