ORIGINAL: MinnFlyer
As far as I am concerned, flapperons should never be used, but ESPECIALLY not if you don't have strip ailerons.
Either do without flaps altogether, or cut real flaps. (It's really not that difficult)
Fly it. See if it needs flaps or if you can live without them
He got the same answer there, I just don't think its what he wanted to hear.
If you droop tip ailerons like a Mustang you're going to take your plane home in a dustbuster.