They are not prone to flood with choke at all. You just need to follow the proper starting procedure. NEVER try to choke first with ignition off!! There will be no way of telling you primed too much.

Proper procedure:
apply 1/8th throttle.
ignition on
choke on
flip untill the engine fires or pops
choke off
flip untill the engine starts.
let warm up for the time it takes

If the engine dies again, repeat the sequence.