Our club rib sits on a Brenderup trailer. It has sealed bearings
and the trailer board electrics are hard wired through the chassis with a standard trailer plug at the back end to connect to the trailer board, so even if you take the board off there is still lots of wiring running through the chassis and the side white lights which can't be removed to launch the boat. I know there are going to be problems with this in a couple of years.
The trailer itself now (12 months old) looks good quality but only time will tell. Can't say I am looking forward to sorting out the bearings and electrics though.