Don't know what makes everthing legal but I do know I ran across a well marked trot line with my my main motor raised and tilted and it still hung the prop. The line was all the way across the channel and the water was less than two feet outside the channel. I know because I went around it going in and scraped bottom. Coming back I decided just to cross it between the jugs. I had no choice but to cut it to get loose. It couldn't have been more than twelve inches deep. How deep does it have to be to be legal.