I think ones like this.My curiousity has been stirred, I looked up pressfit trailer lights and found nothing, anyone lead me in the right direction??
The hole cut out must be wrong as you suggested as the stock lights kept falling out. My old man lost one and the replacement ones he got are also falling out. They like coming out, when you remove the trailer from the water. Will try silicone.The holes cut out of your trailer are too big.
As mentioned by XS Power, just silicone them in.
Our horse trailer uses grommet mounts.The hole cut out must be wrong as you suggested as the stock lights kept falling out. My old man lost one and the replacement ones he got are also falling out.