Passenger car trailer: reduce payload to 1,000 kg by increasing the unladen mass

Hello, I would like to buy a new trailer (new vehicle), which has a permissible total weight of 1500 kg. The payload is 1182 kg, the curb weight is 318 kg. In order to save on the insurance, I want the trailer to run with 1000 kg of registered payload. This would halve the insurance contribution (I would slip from the class from 1000 kg to 2000 kg into the class up to 1000 kg). However, I do NOT want the trailer to be loaded in a classic way, but instead I would like to increase the empty weight by 182 kg, to exactly 500 kg. My question: Is this possible? What can I grow more or less meaningfully to bring the empty weight to 500 kg? Is it legal to remove these additionally mounted things after registration (the new empty mass, not the part)? With the insurance I have already spoken. Those it is only about the 1000 kg payload, which are registered. Of course, a tax evasion would not be possible, because on the total mass nothing changes.