That is true. But I think that part of secret is to find activity you genuinely like on itself and then not hit every girl that talks to you. Instead, just socialise, do activity, observe people and ask a girl that looks like long term material based on previous non dating non hitting interactions.
Basically, do selection before you date them - that is what meeting girl "naturally" is. Most girls are not good long term match for most dudes - hitting at random is bound to fail many times (unless you are super accommodating type able to adjust to anybody).
I'm going to echo what the other guy said: going into an activity like that just to pick up chicks is not both insulting to the women there (they didn't go there just to get hit on by single men), and not really that helpful for you: you're essentially lying, by claiming this is an activity you also enjoy, when you really don't and you're just there to meet women. (If you really did enjoy it, you'd already be doing it.)