How to catch redfish and flounder

Going on a trip and the Airbnb has a private dock in a marsh (carrabelle flordia if that matters) and there is redfish and flounder off the dock. I have like 4 rods so I was gonna throw out 3 baits and have one artificial lure. What should my baits and lures be and where should I cast them and such. I don’t have a live bait bucket so I was just gonna get dead squid or shrimp but if it’s worth it to buy a bucket I guess I can. Anyways any help would be appreciated thank you!