RE: Slowest Floater in 140" WS and above
The Sailpig er' Sailaire is about as slow as I've flown. Some what of a pain to build but well worth it. Mine tends to ignore the fact that the spoilers are deployed and it's time to land. Even crummy flights off of bad launches are 10 to 15 min. Kind of flies like a big bus on only 2 cylinders, took some time to get used to the time lag between control input and response.
Don't let the tail get fat on you when you build. Mine needed almost a pound of nose weight(not including to 12+ oz. of batteries stuffed in the nose) to balance. Rebuilt the tail feathers and now only need 4oz. in the nose+batteries to balance.