I think it's a good idea.
The problem with the SPFD is that it is part of the National Fire Brigade. There are some pretty simple solutions to the problems, however it would take some bold steps by the Mayor.
The island should take over the FD. Hire and train good, upstanding local kids that are in their early 20's. They know the island, the residents and would care.
There should be a fully manned station in town as is. There should be a fire boat. It could get anywhere quickly, even for medical emergencies. There should be a pumper on the north side of the bridge manned by well trained volunteers and a pumper down south manned by volunteers.
Fire departments here in the states donate a ton of old, used equipment that is still very usable. It wouldn't take much to outfit the entire island.
The next step is getting them trained for medical emergencies.
It just takes some vision and leadership and a lot of hard work by the right folks. And some tax dollars to fund it.