RE: best brake controller 09 f150
Take a look at etrailer.com. They have the model/year specific adapter cords for plug and play. I used to use a P3 in a 2010 F150. Took about 10 minutes to install.
RE: Potable Water Transportation
We have a collapsible bladder and a pump. Kinda like a water bed mattress. It holds about 60 gallons and folds up to smaller than a briefcase. We use a regular 12v rv water pump, wired to a spare battery to transfer it to the rv tank.