Not good
Sorry to hear about that matey , some tossers deserve shooting . On a professional level , realistically unless someone has seen something , which is doubtful otherwise you might have thought they would have said something you are on a sticky wicket . The CCTv may yield somehting but in the main it is usually a waste of time , fuzzy long distance pictures and thefts that take place in the dark. also the advent of the hoody makes this a less than valuable resource . Ensure you do report it to the police , although they will probably be unable to help without any witnesses they will give it a crime number which your ins company will probably insist on . Unfortunately and without wishing to spark an anti police debate we cannot work miracles so no witnesses no real case . Although might i suggest you have a look at the movements list at your airfield say a week either side of the theft and just see if any of the local aircraft have done an overwater flight and cross refer that to those aircraft that park near to you this might yield something . Obviously if you are based at a coastal airfield this might no be very good but worth a look , but if nothing else report it and make sure other aircraft users at the field are aware of this thieving shxtbags existence .