I will be working out a new design for a .15 Fast model. I plan to have these for the AMA Nats this summer. To start with, it will be a foamy. I want to be able to get that l.e. kill. A modified version of my old big block fast. My primary consideration (other than weight) will be to try to maintain as long a tail moment as possible. I have never been a fan of the way the Ukrainian models felt. To me they kind of bobble and do not point well. Regardless, I prefer to fly my own stuff, so here I am. I know that with the light .15 engine, it may be tricky to get the tail boom length that I want. So some design considerations will be to keep the tail area to a minimum, getting all of the weight out of the tail, possibly using thread to sew the tails on, as opposed to the wire, removable type. I am also considering sweeping the wing back, like we have done with 1/2 A designs to allow for a more aft CG. Right now my area is around 455 sq in. with a 52" span. This can be adjusted, but I have been told the hot FAI engines can handle it. Any thoughts on this?