Cameron
Yes I think you are right. If the bottle is empty (it now is) there is no problem. To fully disconnect, its a simple bottle valve shut and then screw off the line/fitting.
Don't think I will use it on the street. Whilst it is fun, it does have a tendancy to throw you around a little.. Experience will adjust/remedy that feeling.
Will be interested to see your thoughts once you are connected.
A little costly also!!
I'm running the single 100HP spray nozzle.
Bernie