20th day of QQQ short term up-trend; TQQQ shines again

GMI6/6
GMI-26/9
T210875%

All of my indicators remain positive.   However, note that the T2108 indicator is at 75%, very close to extreme overbought levels where prior markets have topped out.   A reading near 80% would make me more cautious.   Since the first day of the short term up-trend in the QQQ on March 30, that index has advanced +3.26%, the QLD, +6.44% and the TQQQ, +9.73%.   The TQQQ beat 86% of the Nasdaq 100 stocks. (AAPL was up only +.44% and GOOG was down -7.58%) If I had only jumped on one of these index ETF’s on the first day I identified this up-trend! How many times do I have to learn this lesson?