for occasions when im not sure how something will go, i get out my tame test pilot, TP1 , he has a solid enough bone structure to survive most of my failures[}:)]
surely a wing that shape would create lift at the rear

and youd probably need a push to get it up to a workable speed, fat chance of getting going on any kind of downwind start without some way of getting faster than windspeed and reversing the flow of air over the wing