Hi,

might have been me, the collapsible grey water tank I have is for drinking
water (err... was!) It is a clear/whitish cube about 18" on sides that holds
5gals. flattens down to a wad 2-3" thick when.  Has cheapo handle and on/off
spigot. These things are in every rinky-dink hardware/camping store in the
summer, $5.

 I take off the spigot, and have an extra length of big vinyl tube that is
on the Westy sink drain and into container. Use a bit of coat hanger to hold
it up to frame. Good for a couple of days when parked, just put the spigot
back on and head for dump place etc. I don't mind if it overflows a bit,
grey water is not a disastrous spill, more to keep campsite neighbours
happy. Dish suds are a PITA though. Oh...  backing out without removing it
makes for interesting effects.. ka-plow, foosh :)

bye, Tim