Hello, I've had a scan through and can't see it already suggested. I can imagine it would be easy to implement.
My suggestion is a Water Rescue Pod.
Instead of the trailer, a pod that works exactly the same. My local service do not operate trailers and utilise pods instead. I imagine other services also use this setup.
Must Say That'd be quite a Good shout, Grampian did have something Similar back in the day but called it a "Flood Rescue" Pod So would quite greatly assist my set up also