To get the best view hummingbird recommends between 2-6mph, and traveling in a strait line. Something to keep in mind however is most people use them with the transducer mounted on the transom do to the fact the the motion of the motor side to side will distort the picture. With side imaging you want to cruise in a strait line. I saw on one post where someone did put the si on there trolling motor and would turn it to the side to see what was in front of the boat much like a 360. I can't say if or how well it works but maybe someone on here can.