The likely reason carb ice doesn't form as quickly in Alaska is down to low relative humidity and temperature giving a lower overall water content in the air. It's possibly not valid to compare rates of ice accretion in dry arctic air with much wetter, warmer air of temperate climates.
Carb heat is best used as a preventative measure because the process of clearing intake / carb ice is likely to cause the power situation to get worse before it gets better, due to the ice melting, disturbing the airflow in the intake and then going through the engine.
Certainly the aircraft I used to instruct on was fuel injected but had an induction air heater. As far as the go-around was concerned, to avoid detonation, RAF teaching was the phrase "RPM - MAX (CS prop), Mixture - FULLY RICH, Carb Heat - COLD".
Bring on the Diesel engine - definitely no carb icing, mixture leaning or detonation problems then
