Chris,
i think its good to have a mix of long termers and trend traders...
gives everyone then a choice of what to do... and it allows longtermers the oppurtunity to add stock when it gets oversold.
whilst i have a couple of 'long term stocks' it is still important that they adhere to the major trend and support lines.
Dont worry I will flog a stock when it breaks down terribly. I havn't had one of late that has broken all support lines. Trusting the fundamentals has been good to me lately. AGM/AOE/ERN/BMN/ECH.
What I do though is always sell enough to free carry holdings. I have also had my quick plays like FXR/WMT/NWR/TMR. I usually do try to hold though and ERN fits the criteria for a long term hold. Thats just my opinion.