Some of us all still here -- we have no life! lol
You might want to start a new thread on this as it might get more attention.
Anyway, to answer you question, I'm not sure why the floor was raised at the stern. Perhaps to create clearance for the tiller? Or maybe something to do with the integral swim platform. I don't know. In any case I'd be wary of cutting it out and leveling it as it might seriously affect the structural integrity of the hull.
2005 X2, Viper Red, MCX, OJ TZ-X5 prop, PPass, rear 750 sacs, KGB, IBS, Bennett Wake Plate, custom wake shaper
(previous) 2001 X5, 1991 TriStar 190