RE: Slowest Floater in 140" WS and above
the sailaire (i've built and flown one) is very big and slow - mine used to just sit up there parked in the sky for about an hour.
we used to call it the 'pigaire' because it was such a pig of a plane.
sailaires are a little tough to build though.
btw, what do you plan to do with this big, slow, floater?