https://skippersreview.com/review/new/rhodan-marine-systems-inc-sarasota
Engineering skills and enthusiasm for boating led him to invent a virtual anchor trolling motor back in August of 1991. This system utilized a precision differentially corrected GPS and an embedded microcomputer to control the trolling motor's refined behavior. Rhodan's GPS guided trolling motor will hold your boat position with precision accuracy in any depth of water, completely unattended