I'm righthanded... so I set my prop that the right prop blade (the one I flip) bumps against compression at the 4 to 5 'o clock position...
To start the engine I put that same blade at 1 to 2 'o clock, put two fingers near the prop hub or spinner, and give it a short strong clockwise flip... I pull my fingers out about at the moment where I start to get compression
This may take some practise though... it's all in the wrist... I hardly use any elbow or shoulder... just a quick flip of the wrist and fingers is enough.

Anything below .60 ci can be started in the conventional way: counterclockwise (but don't drown the engine)