The first goal of arbitrage is to consistently achieve an annual return of 4-5% better than the exchange🤣. Here are some methods I've been using that can reach this annual return:

1. OKX Pay with a limit of 10,000 U, annual return of 5%. OKX is offering payment subsidies, but I don't know when this will end.

2. Kraken Pro, with a savings USDT interest of 4.5%. I personally use Kraken for withdrawals, so I will keep some U there. This also helps to isolate it from my trading account. Consider it a backup in the most extreme case.