We had no problem with the winterizing... of course the PDI tech told us that the container with the anti-freeze had to be no more than a foot or so below the fresh water intake, and when starting it going hold the jug just above the level of the intake (to start it siphoning) Once it was going, just sat the gallon jug on top of a little stool, and away it went.
Seems like it just needs a little help starting.
And yes, country fill works the same way. Use the same short hose, and put into a 5 gallon container of fresh water (with the valve in the country fill position), and turn on the pump.
2016 Redhawk 26XD
Me, Dear Wife,
2 Bluetick Hounds
1 Newfoundland / Black Lab Mix
1 Cairn Terrier