RE #7-
"I was standing on top of the tuna tower, and not sure how high I was, but it was up there . . . "
I count nine rungs on the ladder. The rung sizes are not standardized in any way, but usually seem to be about 15--18" apart. Adding in guestimated freeboard, distance from gunwales to ladder mount, plus fudge factor, your feet were probably about 20feet above the waterline.