I’ve dove the U-352 and used a nitrox 29. It is an awsome dive but really deep. I had a twenty minute bottom time with the nitrox 29% and my max depth was 125’. Scuba Clay and Jeanna said it best about the diving North of Florida. You have to like wrecks and the Moorhead city is some of the best ones. NJ has great wrecks but the water is about 10 degrees colder than NC. Conditions at both can be rough as far as seas and about 1/3 of the planned dives don’t get made.