Do you censor your previews on your paid site?

I started censoring all of my previews for videos on my free site because my paid and my free got leaked. But I’m unsure of if I should censor my previews on my paid too? I know they paid the subscription price but so many men can just get off to the preview why bother buying the full video is how I look at it.. I also cut down my previews to 5-10 seconds.