I used to roll back on the slope during my lessons, more worse
is sometimes can and sometimes cannot, so I can't be sure of
whether I can or not.
Then slowly realise just have to do synchronised movements when
reached half clutch and releasing hand brake. This is what I
do
1. Rev up to at least 2.5k rpm or 3k if wan to make sure
2. Release clutch to till u feel the car "wanting" to move ahead
(if can't feel, then can judge by when rpm start dropping)
3. Then do 3 movements at the same time - release clutch, step
accelerator and release handbrake and off u go.
Most impt to remember when "taking off" is hand push down, left leg
up, right leg down.
Hope my experience is useful to you