I often wondered why they just couldn't use a combine type setup on a barge type shallow running airboat and just chew the stuff up and spit it out as they go. Or haul it to a spot it can be off loaded, gathered up and hauled away.
The spray takes awhile to kill the stuff then it sinks to the bottom anyway. Might have something to do with following the money trail same as other issues involving Okeechobee.