Unfortunately, not every border raid is successful. Even the smallest detail can spoil the whole operation. Therefore, it is important to think over the whole way across the border and follow the plan precisely. Collecting things to go through the forest, and then suddenly go through the border crossing checkpoint is a stupidity, which results the whole group is arrested at the border. If you meet hypercritical customs officers, try to offer something to them. It is possible that they agree to let you through without additional checks.