Mike, of course 25 to 30% is a normal range for most conventional aircraft but under the circumstances starting at the farthest aft position of controlability, is I feel a mistake. Since we are dealing with an unknown glider and a newbie here combined with the difficulty of trying to explain MAC on an unknown plan form then I just suggested a safe initial figure that will work for the gentleman.

But then agine I suspect you knew that and are just baiting me to get me to explain myself.



John