If you're asking about dating sites without registration that are safe, you're already ahead of where I was. How quickly you get going is what separates a good week from a wasted one with dating sites. What decided it for me with dating sites were how many accounts are active.
If the signal-to-noise ratio is not sorted, dating sites will not go anywhere. You cannot really talk about dating sites without talking about how alive the pool is.
In practice, dating sites live or dies on the practical side. Your mileage on dating sites without registration that are safe will vary, but that is the pattern I saw.
My checklist for dating sites:
- allow a couple of weekends before deciding anything about dating sites
- set aside a solid month before deciding anything about dating sites
- keep expectations low for the first fortnight on the dating sites side
- read the whole profile before you send anything specifically for dating sites
Adjust as needed — dating sites is not identical for everyone.