Easy to drop trips. Very difficult to drop a trip over a holiday unless to do a drop/add (I do that all the time to get better layovers). NWA is on a computer based bid. If you don't put anything in, the computer "gives" you your monthly bid that will fill your schedule up to the monthly min. So, to answer your question.....no bid = crappy line.

NWA has block/line holders and reserve line holders. Can't go back and forth UNLESS you are a reserve holder and you bid a temporary block. A "temp block" holder is on a month to month basis as needed.