dudeeee nice build. luckily, in most places, floating sliders can't be complained about (well they can) by neighbors. You can just justify it by it being the same as a water trampoline. If people are trying stunts on it, there's not much you can do. If you had planted it in the ground though, you could have issues. Anyways, looks sickk, enjoy it bro.
P.S. might not have been completely sober for this post... sorry if it's too over the top...