AT brethren….and sisteren….need a Thanksgiving revelation. My thru hike plan is to start from Springer about March 23rd. I know Mr.Farenheit can dip low and I have read stories about reservoir lines freezing etc. Would it be better to opt for bottle instead and eliminate risk and go to Camelbak later perhaps Erwin,Tnn thereabouts? Or can you use insulating tube and blow back H2O. Have heard opinions back and forth.Would also like to know that if tubing does freeze does it burst? Does bite valve burst? Or does line just not flow? Need some profound insight here please.