Measure the complete footprint
Enter one item's length, width and height in millimetres in the configurator. Include packaging and projections. The multiple-item option is for identical rectangles, not a mixed collection of different loads.
Count all the weight
Total cargo weight equals item weight times item count, plus extra weight. Two 300 kg crates and 40 kg of other equipment total 640 kg. That exceeds the stated 400 kg payload of the FOOWEE 3.9 × 2.05 m. The FOOWEE 3.2 × 2.2 m listing states 990 kg, but its footprint and loading arrangement still need checking. A longer deck does not automatically mean more payload.
Leave usable clearance
Edge clearance and the gap between items are separate inputs. A zero gap may allow a geometric fit without leaving room for securing equipment. Allow space for your actual loading and restraint method. Items are not stacked.
Rotation and loading direction
Crates may be compared with a 90-degree rotation. Cars, motorcycles and machines retain their loading direction. No layout found does not prove every alternative arrangement impossible. Discuss unusual loads with Witmar. For a motorcycle, also inspect the motorcycle trailer range and its securing equipment.
Review the actual listing
Open the candidate's product page for current specifications, photographs and availability. Missing dimensions or payload do not become a confirmed match. Next, add the towing vehicle.