Question for the Open Time Monitors:

I routinely try to get certain days off, consequently I will drop trips in initial open time, but sometimes will be unable to pick up or trade to get back to my original line value, so I will pick up (daily) open time to get back to my line value (usually around 70 hours). Ultimately, my question is will I be added to some list even though I fly my total line value? It seems net zero to me.