I've been trying to boil this thread down to something I understand and can calculate on my own using BarChart and Stockcharts websites.
Could I get a reality check? - Does the below seem reasonable or am I missing something important?
Many thanks in advance!

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Nasdaq-100 stocks:
* Each month, trade on the 2nd to last day of the month, using the previous day's Nasdaq-100 closing prices
* On Trading Day (at or near open), check to make sure that SPY is above its 325 trading day MA. If not, sit in Ultra-Short Bond ETF while out of market
* Keep any existing holdings that are still in the top-12 9-month performance rankings (let winners run)
* Pick/Hold the Top 9-month performance Nasdaq-100 stocks, filling to five positions (Note: 9-12 months performance all seem to work)
-- Don't enter a position on trade day if that particular stock's 5-day share volume (not dollar volume) is less than its 60-day share volume;
-- Alternative to improve recovery time with small loss of CAGR: Skip a pick if its dollar volume ADV20/ADV700 is declining (Question: 20-day ADV < 700-day, right?)
* Buy each month (and continue to own unchanged stocks) as long as SPY is above its 325 MA on trading day.
-- TS Option: Place a 35% trailing stop on each stock