From kings landing it's a 8.5 mile run time depends on your pase. But yes you should paddle board, kayak or canoe.
You can use tubes at rock springs. To many gstors on the run from there to use tubes.
If you do the whole run it takes about 5 hours. You don't really have to worry about boats. But it's not really a good time run. I would use a kayak, canoe or paddleboard. You do need to be able to paddle in some points and there are way to many sharp sticks that would leave you stranded miles from a take out. Also while not an issue most of the time there are a decent amount of alligators that you do not want to go swimming with.
It would not be a safe idea to tube or float with all the boats.
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