Same experience as above.
The key is to troubleshoot your cooling system and determine if you need the extra exit area.
If you need cowl flaps they are a slick bit of kit.
The cowl on my Rocket (also based in AZ) is designed for takeoff, cruise climb, and cruise. Slow formation, prolonged high alpha maneuvering, and pattern work would send the oil and CHT temps up quickly.
I have 2 of Alan’s flaps on each side and highly recommend them if you need a cowl flap or 2. Or 4…