Air in the water lines

[jimocon]

I have this theory. When we're hooked up to shore water, we have
water pressure in the hose. When we want to unhook, we turn off the
water faucet at the campground, then snap off the hose from the quick-
release fitting on the coach and the hose spits water all over (me
included). So, here's my theory. After we turn off the water faucet,
we flip the fill switch to take pressure out of the hose, then turn
the fill switch off, disconnect the hose without getting wet. And it
works!

Only problem is, then we have air in the lines and water spits out of
the faucets. Why does this happen? What are your theories?

We want to unhook without getting spit on AND we want water pressure
without air in the lines.

Pen Sand & Jim O'Connor
83 PT35 (parked last night at Ernie's in Weatherford Texas
Ernie & Brenda are great hosts - they serve box wine)