It can be. In many tests we have not seen any problems caused by carbon fibre components in a boat, however, mounting Transmitters inside a boat constructed totally of carbon fibre will reduce signal strength which amy vary when the carbon fibre components are wet. It is also not recommended to mount a display flat onto a carbon fibre surface as there may be some detuning of the antenna. If using carbon fibre mast brackets it is recommended that holes are cut in the brackets behind the displays to prevent possible problems. Tacktick do NOT recommend the use of the clip bracket when displays are mounted to a mast bracket. Lines associated with sail control can get caught on displays causing them to become detatched.