as with about any finder or i should say with me i would mount it where you can see it anytime you want from about any position on the boat . mostly just to keep an eye on your depth so you can stay on the dropoffs and ledges . they are really simple to mount and hookup the cords all fit in the bracket in thier correct location kinda fool proof .
the only thing that can be just a tad tricky and when i say tad means if you can do anything at all with your hands it's simple. there should be instructions about mounting the transducerif putting it on the boat but may have to buy a mount if installing it on the trolling motor.
i have a 525 on the back of the boat just to watch where i'm going sometimes gotta follow the river channel and on the troller i have a 575 hummingbird and i like them both simple to use and work real well.
hope i was of help if not there will be plenty of guys that may be able to help you more than me .
best of luck ,
Scott
Life comes at you fast ... Better have a net...
Scott Beitzel----Western maryland