another option would be to use a blow out plug ($1.45 @ camping world) and 40-45 psi air pressure. the simple items can be purchased at camping world at the links below.
i agree with cwit.....do not put the antifreeze in your tank. locate the inlet hose on your pump if it does not have the winterizing hose in place and you can pump straight from the jug.
we have another five weeks of camping here in nw iowa before we are considering this project. has been a great season!