.

thoughts:

Strategy

• Sell a 0.15-delta put credit spread (PCS), 30–45 DTE.
• Collect credit (C).
• If the spread value doubles (i.e., your unrealized loss equals the initial credit (C)), close the trade.
• Never roll, never take assignment.
• Re-enter on the next setup.

This makes the strategy easy to backtest and avoids the "rolling forever" problem.

The main question becomes: which underlying gives the best long-term expectancy? SPY, QQQ, IWM, TQQQ, SOXL