Cheri,
The biggest problem with carrying extra water is the weight. A gallon of water weighs over 7 lbs.
Here is what I am planning to use for boondocking. I haven't bought it yet, but plan to. I looked for it at CW in Fife, but they did not have it in stock, so guess you can only order it online.
http://tinyurl.com/hkbhz
Robbie
Peace!
Robbie & Alice Simons
Seattle
2006 Dodge Ram 3500 4X4 SWB Laramie (LNRNGR)
2006 2980RL (TONTOW)
Line-X bed liner
Jacobs Exhaust Brake
Prodigy Brake Controller
Hijacker 24-UMS-21 Hitch
Start Fulltiming 10/2006