You Can't beat Bob and his crew!!! They have everything you would ever need to put on any boat small bow rider to the biggest fishing vessels you see on discovery channel !!I brought them an old sounder I got from my Dad (CVS 801 from the 1980s) and he was able to repair it like new. My dad swears by that sounder and refused to get a new fancy electronic one so when I gave it to him on his birthday and told him that its working again he almost cried !!\Aside from my experience theres not one fisherman or boat owner in the gloucester area or even Maine that doesnt know this company. They have been in business for over 35 YEARS!!!