I try and put as much info about my tank into the "looking for team" message as I can so as to help those who are looking for a specific type of tank. I actively encourage people to send me a tell rather than a blind invite. Even if I'm busy helping other teams I'll always reply and thank then for the offer of a team. It's the little things like that that people remember and if they find you friendly and easy to approach then it's more than likely that they'll look out for you again when forming another team.