Morgans wrote:

Fun thought problem, huh?

Well, it was until you showed how it is clearly impossible 8*)

Actually, the original post wasn't asking about putting floats on a
Delta, I was just saying that the mechanism chosen by John Dyke might
possibly be a solution for retracting floats. If I were to pick a
solution for floating a Delta, I'd change to a rear mounted ducted fan
engine and seal the belly.

As for all the aerodynamic effects or moving around a large portion of
the airplane, you weren't expecting a fully engineered solution in an
off-hand internet post, were you?