I am certainly not Bob Hoover, and I make mistakes. The premise of CRM is to acknowledge that we make errors, trap those errors before they become problems, and mitigate the consequences of the errors that escape the trap.
I routinely fly up to 18,000 ft, and cruise over 200 kts, with climb rates of 2500 fpm in the lower altitudes, and decent rates of 1000 fpm. A flight profile similar to a King Air or a C-421. An Altitude alerter is a tool not a toy, and it is standard equipment on airplanes operating in that envelope.
The purpose of an altitude alerter is to prevent errors, and to trap the errors when we make them.
Tailwinds,
Doug Rozendaal