I'm in Iowa and anytime we do a spring break trip (DW is still teaching 6th grade), it is always early March. We just pack, go, and I dewinterize at our first stop. Now my winterization is 15 psi blowing, draining everything and some antifreeze only in P-traps, so getting things all back in service is pretty quick and really there is no flushing of lines needed. Other than closing faucets, capping low point drains, throwing bypass valve and installing the water heater plug, its normal setup at the first overnight. Coming home, I don't gamble, so I winterize it at our last overnight (blow, drain, antifreeze in P-traps).
