The manner in which I start all my gassers is:

1) prop at 1-2 O'clock
2) FULL throttle
3) Choke ON (or full)
4) Flip; until it burps
5) Close throttle to idle position
6) Take choke off
7) Flip until it starts - usually 4-6 flips.

That works for me, but for a newbie, I'd recommend the use of a starter.

Just my technique...