My head is spinning. I do the same thing watch my shark weights on my screen and I lower them to where I want them. I do see what has been said here measuring the distance between the duper and whatever is under it but isn't that telling us all the info we need? Trying to put the pieces of the pullze together here in comparison to the info from the fish hawk. I will have a fish hawk x4d the next time I fish lake o have already made up my mind on that