I think there is a bit of mis-information on this thread at this point. TD, F3J and F3B sailplanes do use spoilerons for landing but use them in conjunction with inboard flaps that are deployed 80-85 degrees. This is refered to as ' Crow ". When the sailplane is in this mode it is pretty much locked in and it takes almost an act of God to disturb the wings attitude. The ailerons having about 10 degrees of up deflection are still quite effective. Normal operation of this landing mode is to use it to slow the sailplane, control rate of desent and speed. As one nears the landing target you would either drive the nose into the target or bring the wing to nuetral and the sailplane will drop to the ground. Obviously when using either option the sailplane is a foot or less off the ground. It does require lots of practice and timing to get it right.

As for the OP question and his particular aircraft. The ailerons are too far inward to be used as spoilerons. Doing so would make the outer wing panels stall before the inboard wing. Not a good situation with any airplane. They could be used as flaperons but would need to be deflected 45 degrees in order to offer any real speed reduction. Read this as drag. At that point you would use a good amount of aileron authority. The solution to that would be to mix a fair amount rudder to aileron while in this landing mode but i'm not sure your TX has that capability.