Most Helpful Guy
Definitely send out messages. Then it'll be guys you're interested in. So many girls say they don't get any messages when really they mean... they don't get any messages from people they want to get them from.
If you just want attention from random guys, post up bikini photos or seductive poses... guys will always go for that. Just know it'll be thirsty guys who just wanna bang. If you want genuine guys then change sites.