Who cares what your 'strategy' is. If your selling at the time of your post, your sentiment is sell... simple.
This has nothing to do with investors trading mistakes, It is about disclosing your sentiment at the time of your post. If you are selling and you hold it is SELL + Held conversely if you are buying it is Buy + Held.
After 27,991 posts you should have this figured out.
SYT Price at posting:
3.0¢ Sentiment: Hold Disclosure: Held