Same as in 'green horn' post

Sounds like some one wanting to get in trouble.How much experence do you have.

you can use a 6" in Alabama and Alaska,
what state are you in ? I use a 4" here in the southern states

That size is going to be more than a one person operation, and will wear out the person on the hose quick......  probably better off with a 4 inch, more user friendly and gov't agency (no mattter if federal or state) friendly as well.

You can use a 6" in Indiana as long as you neck down the nozzle to 5". It can be ran by one person in deep water and you don't have to move it over rocks and shallow areas. We have 6 people to move my friends when that has to be done. A 4" is probably a better way to go if you don't have help. I have a 5" and it can be moved by 2 people, but it is still a lot of work.

Any one running a 6'' dredge in deap water with out help is looking for a death sentence.What if a bolder roll onto the divers hand .