I have one.  It is clear flexible plastic, has a valve, is about 8" long.  Doesn't go very far down the filler opening, and if I try to fill rapidly, water pushes back up and out the port.  So, I use this thing when I fill the tank, but from inside through the tank top.  I'm happy with that.  DMc

---- David Beierl <dbeierl@attglobal.net> wrote:
> At 06:59 PM 6/18/2010, Dave Mcneely wrote:
> >What I did find to be a royal pain was trying to fill the tank via
> >the outside port.  It took foooorrevvvvverrrr, as the tank will only
> >accept water at a slow rate.  BTW, how do you
>
> You have to use a little hose extension that goes down inside the
> filler.  RV places sell them.  With that you can fill pretty much as
> fast as you want.
>
> Yours,
> David
>

--
David McNeely