Making simple Dump trailer - using Car Winch

During the renovation of the barn it turned out that our old trailer was already very worn out, so we decided to make a new one. The dump trailer is powered by a 12V installation from the tractor battery. The internal dimensions are 33in x 50in (85 x 120 cm) Weight is about 100 kg. The sides are made of 2 mm sheet metal, and the bottom is 4 mm. Check out our previous videos https://youtu.be/6A4E7jcgB_c?si=mLzzuKf6MXccfxAN - Fence Post Removal Tool https://youtu.be/PLIbNmZE9lE?si=7iXk-NkBF4KS3YHX - HomeMade Kinetic Log splitter (better than hydraulic?) https://youtu.be/MVihtb06f2Q?si=5aamFEVwise3b214 - HIT - Extremely Strong Log Splitter https://youtu.be/KZ9_-nlswhw?si=-gJQT6gWDolZvr0H - 24V Hydraulic Dump Truck