*Disclaimer* I havent flown in several years**
WHEN i was flying regularly those planes I used dual rates on I would keep on high in the air, and if it was a windy day or one of my more twitchy setups Id go low rates for landing and sometimes takeoff as well. (I also almost always set my slave buddy box transmitter to low rates for anyone I was teaching. Helped me keep in front of my student's potential mistakes.)