Night fishing. The grandma watches the kids. Bring "at least two hundred pounds of ice" to keep the fish good until morning - how big is this boat, and how does one make coffee on this boat?
Love the details that are uniquely "@myjob" - who else but you knows things like this: "I hear a snook strike, no other fish sounds like a snook. It is like two 2x4s being slammed together."
This part is universal and lyrical: "....listening to the sounds of the river. Whoosh, a dolphin came up to breathe."
What a beautiful freewrite!