Product review (4 stars): Needs a dryer
Do not put too much soap in; it'll take FOREVER to rinse.
If you have to carry the clothes to where you plan to hang them it's going to get messy, a spin drier is pretty much a necessity with this in my book.

Personally, I place it in the tub and use a moveable showerhead to fill.  Mine is a perfect length so I can stick it in, turn it on and walk away for a few minutes and it fills right up!
When I need to empty I just move it to the back of the tub and pop the tube off, do something else for a minute or two, come back and either refill to rinse or start pulling stuff out!