I feel fortunate that I was able to weed most of those guys out before the first date. I don't know if it was the platform (mostly OkCupid, which asks a lot of questions and gives you a compatibility score based upon your answers and theirs - I stuck with the ones that I had a high percentage of compatibility with. That doesn't mean we necessarily would be compatible, but means that we weren't on the opposite sides of the spectrum in terms of religion, politics or kinkiness). Also the profiles were fairly long (there were several prompts) and I could learn a lot from reading the profiles that helped me weed through people. I think some of the newer "swipe right, swipe left" platforms encourage superficial choices and are probably preferred by the creepier guys.
I also, honestly, mostly ended up dating guys that I contacted, rather than vice versa. Not sure if that made me any more successful or not, but the guys I contacted seemed better suited to me than most of the ones who contacted me. (I think men just cast a wider net because they get fewer responses?).