I'm not very good at chasing after those few seconds of price differences in each pool; rushing can easily turn into paying tuition for others. As for the sandwich attack, honestly, what you see is "opportunity," but what the other side sees is "the fee you pay for this transaction," especially in less liquid pools, once slippage kicks in, miners/searchers will be like they smell something.

I actually prefer to focus on on-chain fee rates and batching rhythms, kind of like watching the old PoW hash rate curve: when it's hot, anyone can make money; when it cools down, you realize whether you're arbitraging or being arbitraged. Recently, people keep comparing RWA and US Treasury yields to on-chain yield products... all I feel is: don’t just look at whether the "annualized rate" looks right, the hidden costs on-chain (front-running, sandwiching, failed transaction fees) can sometimes be more painful than the rate itself. Anyway, I now try to split my orders into smaller parts and avoid rushing during congestion; taking it slow is fine, at least I know what’s going on.