Nice pics and report. A man of dedication and determination.
Did not know the SI could or would work in 2 fow. In the first pic you posted, it shows 2 fow for depth, and the 38' in distance. Is this 38' the distance the SI beam scanned? I've read numerous times that the SI beam effectiveness is limited by the depth of the water, the deeper the water the farther it would or could scan due to its "fan" shaped beam. And in turn, the more shallow the water, the less distance the beam could/would scan, so in 2 fow, it would scan almost nothing based on other comments.