Would it be possible to use high-tensile-strength barbed wire and some jug floats?
Walk both ends to the tractor hitch and then haul it out. Or anchor one end and attach the other end to the tractor.
Just spitballing for items that Rain might have easily available at his property.
(I have not tried or seen my proposal. Definitely DO NOT want to have anyone standing around when a strand of barbed wire breaks!)
Now you got me thinking. What about those hog panels cut down so they are only 12"-18" tall x the length that they are and use floats on them to float them a wee bit out of the water and pull from the center of the vertical? They should be strong enough....... You might be able to make something that is 24' long or so from one panel.