I assume you are teaching in R22's Trans lift?
After teaching in Florida in the Summers past, try doing a vertical climb on a hot day in an R22 and you will really struggle to get out of anywhere.
Geoffersincornwall said it how I was taught to teach it. Transition forward until you get to ETL and then 30 knot attitude over the obstacle. Even the 44 used to struggle on those days when it was hot and you are heavy. Not a good feeling!