Selling during the peak

How are you selling? When everything pops, and you want to liquidate. I’ve heard about people getting locked out and not being able to sell. I’m keeping everything in the ledger and will only send what I want to sell to the exchange. Thinking transactions in the 20-40k range per day? Under 10k might get a structuring flag. Using Coinbase primarily, I have a few coins on Uphold just to have a transaction history. I have Crypto.com set up and Gemini too.

I don’t understand the sell to USDC ideology, because the way I understand it is if I try to sell a stack of crypto and the exchange flags it, why does it matter if I sell to USDC or fiat? If I’m flagged I’m flagged. To be clear my concern is selling. Not withdrawing to bank. I could see selling to USDC and sending back to ledger but that makes me nervous.