Originally Posted by
rcguy59
I'm pretty sure I'll go with a single fin. Shaped right, it will double as a launching handle.
If that is the case fill in the gap that is normally between the elevons so you can shift the fin rearward the 1-7/8 inch or so to put it even further behind the COG. That way you can shrink it down a bit from the 42-43 square inches of area that the dual fins or winglets have.