It's bloody heavy I definitely won't be lifting that out with Dulcinea's derricks!
It was taken to the water with a forklift which seemed a very sensible solution.
It's hard to tell, but is there any built-in buoyancy?
My last boat was based on a very similar hull from Bonwitco (Norwegian With design) and had a plywood floor encased in GRP. It was flexy so I ripped it out. I had to strip out over 200kg of waterlogged open cell polyurethane "buoyancy" below the floor, which halved the weight of the hull.