The reason why!
In the rules you have seen the mention that you are not allowed to bring a Landing-net, Recovery Sling or Carpcradle unhookingmat.
The reason is simple we want to keep our carp safe and therefore we ban the use of this equipment as they can be infected by diseases which can kill our carp. In each swim you will find our own equipment which is from good and well known brands.
On arrival please check if everything is on the Carp Safe station on the back of your swim.
On departure the bailiff will check the equipment if everything is there and also if it is in working order, when equipment is broken we will charge to replace the broken items