Marine on St. Croix to Arcola area could possibly be considered sloughs…?
I haven’t used live bait since I was about 12 so I can’t help you there, but I can reccomend a pearl/gray swimbait rigged weedless for these sections. Focus on the tops and bottoms of islands along with the standard sand drops.
I might also add that the early bird does not necessarily get the worm on the st croix. Some of the best smallie fishing occurs after 10:00 AM, so dont be afraid to plan your trip at odd “fishing hours”