just gotta make sure you drain the engine and the tank up front,,,,,after that I would run the engine for about 15 secons at about idle speed and let it drain some more,,,
you do know you are running the engine with no oil for those 15 seconds right? thats not good. you have a dry sump motor and the only oil your getting out is whats sitting in the oil lines that circulate from the motor to the oil resevoir. so yeah... your crank, connecting rod, wrist pin, piston, etc thats all spinning at 1000rpms under a small explosion is not being properly lubricated. so bad
dont do that anymore, its not worth it at all to get that little bit of old oil out