If just looking for the bang or fun and nothing serious... Agree and Amplify, Play the long game, don't listen to what they say but what they do, look at their friends and family.
I feel I've kind of kept it short and some may not really get my previous post. This is based on mix of experience and common sense.
Agree and Amplify - Religious people are very stern on their beliefs and values and it's often futile to try to debate or argue with them on anything. Once again, if you're just looking for fun and trying to get laid, no sense in getting on her bad side regardless if you agree with something or not.
Play the long game - It's pretty common sense that in most cases, religious girls aren't going to put out on the first date or even second or third. Don't expect to get laid fast in other words. I would normally cut my losses after 2nd or 3rd date at the lastest if I was just looking to get laid but with religious gals, I look at it as a challenge and sometime may extend it to 4 or 5 dates. Just use your judgement and know when to cut your losses.
Don't listen to what they say but what they do - This is pretty much universal but just because it's in a religious context, don't let that fool you either. I know some guys would give up right away if they hear that a totally religious gal says she won't have sex until 6 months, 1 year into a relationship or even until marriage or engagement happens. Don't let that deter you as they are just words. I've had this said to me on more than one occasion and I was able to get laid fairly fast(all within 5 dates). Also know that some gals get really technical by the word sex, meaning just intercourse. Some will do oral and/or anal to get around the technicality. I would say as long as you're up for a challenge and there's forward progression(touching, kissing, etc) on the various dates, there's a good possibility that sex can happen if you don't mess up anywhere. Girls can't ignore their menstruation cycle and how horny it makes them feel. You just have to be there when they are at their peak because at that point, biology takes over the psychology.
Look at their friends and family - Do they have any friends or family living less than an ideal Christian life? I see many gals that talk the talk for various reasons(defense, screening, etc). If they have friends or family with issues, some of that behaviour tends to rub off on them. If you get to a point of talking about her friends/family, you can tell if she maybe putting up a front for whatever reason.
Once again with anything, there are going to be exceptions and outliers. I hope this let's people see that wanting to have fun with religious gals can be possible. At the same time, I hope guys can see that wanting to settle down with that "perfect" religious gal might be a mirage as well.