Tthere was a former poster named
SNS3Guppy Who is extremely knowledgeable--a bit Yosemite Sam in comportment, but don't let that predjudice you..anyway one of his sveral aviations jobs was AgFlying inthat he gives some details on the many interesting uses of flaps in turns...I'd do a search under his name he had lots to offer IMHO...
here's a video of what happened to him on pprune