In the Oosterschelde, tides shape everything. Start by choosing a known entry (for example Bergse Diepsluis), then pull the local tide table for that area. Plan to be geared up early so you can enter close to slack water, when currents are weakest. Brief with your buddy on a max distance, turn pressure, and an exit plan if you get pushed off the site. Stay well clear of marked channels, keep your SMB ready, and treat the tide plan as a hard safety requirement, not a suggestion.