I have flown a Nanchang CJ6 out of a busy controlled Canadian airport for many years. I started doing a R and B for two reasons.
1) It's a lot of fun
2) The CJ6 has a very draggy gear but a very low max operating speed. With a R and B you can reduce to low cruise power entering the circuit and use the the upward flight path to get to gear speed, the drag of the gear and flaps to keep the speed down on the curve back to the runway and then slowly bleed the power of on short final. This completely avoids the deadly (to radials) condition of low MP, high RPM and highish airspeeds.
After demonstrating to ATC I could accurately fly the aircraft and was not a jerk I found they were very accomodating and now they almost always give me clearance for the R and B with out me having to ask.
