iMessage: Sending a message via Text (SMS) instead of iMessage

Does anyone have this issue as well: I'm unable to force/choose for a message to be sent via text message (SMS) instead of iMessage. At times for any reason, I would like for my message to be sent via text rather than iMessage, but the message would go out too quickly before i can hold the blue bubble and select 'send via text message'.

Anyone knows how to go about doing this, other than switching off iMessage or mobile data temporarily? I personally dislike switching off iMessage as it messes things up and takes some time for it to be reactivated.

Thanks!