HarryMann
Altitude cannot be maintained in a Stall, by definition. What is referred to in the Colgan training syllabus, is called 'Flying through the Shaker'. With the onset of Shaker, the pilot is to increase a/s above the trip limit of the Shaker and past, to resume stable flight. No altitude beyond 100 feet gain or loss is permitted, to pass the exercise. The Shaker is a Stall alert, not a Stall.