There are a bunch of wings for the Cassutt
16 ft 18 ft rectangular --then some long highly tapered composite stuf of recent decelopement for longer course at Reno
A highly tapered wing for areobats is fine --as long as the span is not excessive - basically--they are very responsive as the mass is really inboard made light enough - they work fine
I tried this already on my Petrol Petrel
roll rate is a blur.
The rectangular is still the best at very low speed work - here are some examples - the 3view of the tapered is not the taper I will use . it will be like the red and white example.