A rules‑based strategy that mostly rides TQQQ in uptrends, parks in T‑Bills when risk rises, and briefly flips to UVXY when markets look overheated or after fast pops. It uses heat gauges (RSI), trend filters, recent‑drop checks, and bond signals as brakes.

Core: ride TQQQ (a 3x Nasdaq‑100 fund) in uptrends; hide in BIL (T‑Bills) when risk spikes; briefly flip to UVXY (a volatility fund) when markets look overheated. Rules: 1) If TQQQ or several sectors look “hot” (RSI: a 0–100 heat gauge) or after a >5.5% 1‑day pop, go to UVXY. 2) If TQQQ fell >12% in 6 days, buy the dip only if very “cold”; else use BIL. 3) Otherwise: if QQQ > its 25‑day average and recent worst drop is small, hold TQQQ; else use bond trend checks (BND, IEF vs TLT) to choose TQQQ or BIL.

Out-of-sample, this strategy beats the S&P 500 on risk-adjusted return: Sharpe ~1.18 vs ~1.09, annualized return ~73% vs ~19%, Calmar ~1.85. It rides uptrends (TQQQ) and uses bonds/UVXY to manage risk—more upside with disciplined drawdowns.