I've got a Humminbird Wideview fishfinder that I've had for maybe 10 yrs. I don't know if it works as it came with a boat I bought back then and never used. I have all of the components but none of the small screws and washers need to mount everything. I can deal with that. Couple of questions; Is it worth my time to gather hardware and test this unit? Are they a reliable, user friendly unit? I don't know what kind of $$$ it's worth or cost new. I did download the operations manual.