How should heavy steel coils (Stahlcoils) or cylindrical paper reels be secured when transported in a coil well (Coilmulde) on a specialized trailer under VDI 2700 Blatt 19?

1. Placed on anti-slip rubber strips inside the coil well, secured with direct loop/cross lashings (Buchtzurrung / Direktzurrung) or edge-protected tie-down straps, with well covers firmly locked when empty
2. Allowed to roll freely inside the well without straps because the well walls absorb 100% of dynamic forces
3. Wedged with loose wooden scraps without any lashing straps
4. Secured using plastic wrap around the outer perimeter only