You have a good point. But, that 20ft of water is in the open , when I get into the marsh average depth is 2-3ft. I just don't see where the si would be of help. Don't get me wrong, I am intrigued by the thought. But, like most, I have to justify that $ amount to the better half.
So, back to the question, would I not get a lot of scatter in this shallow of water, most of the slews are only about 15-20ft wide.
I appreciate the answers.