hi im joe van wagnen and a long time shipwreck hunter in the northern great lakes. I have the same sonar you do and would love to share information with you. if you would be interested let me know and I will give you a call. I have a Trident rov on order and can wait to get it this summer.
have a great day! love your website. it along with the information from deepvision inspired me to upgrade my wesmar towed fish to the 340 from deep vision. wow what a difference. have found many wrecks with the old wessmar 500 ss over the years beginning in the mid 70's
have a great day!!
Joe Van Wagnen