FIXED: 10Δ short · 2x stop/side · 6% max DD · 50% BP util · 15% stop rate · ~16% IV · Up to 12 tranches
FEES: Auto-picks cheaper of $10 flat (TastyTrade cap) vs per-contract ($7 SPX, $4.50 SPY, $11 /ES per IC)
EDGE LOST = (wing cost + fees) / naked short premium · Lower is better