Seems to me the Hamble area is a prime target for thieves, it also seems to me that the same marinas get hit over and over again, do the marina companies not care as long as boat owners keep paying the berthing fees ? Perhaps boat owners need to start asking more questions about security, we need a revolution !
It isn't rocket science to have locked gates, someone on duty and CCTV cameras and lights installed.
Perhaps if someone did a news article for the local papers about concerns around thefts and did some analysis of thefts and named and shamed the worst marinas in the south, maybe the marinas would take more care ?
Perhaps marine insurers should start offering cheaper insurance if you boat is in a well secured marina that has x,y,z in place and more expensive without.
All Food for thought !