Great Question, and I'm happy to respond to it. I have done a lot of online sarging on dating sites, with a good amount of success. Believe it or not a whole lot of the game can translate over. You're right obviously she can't see your body language. However, you have to be creative expressing your cocky/funny attitude through email or IM.
Use emails as a chance to write your DHV stories to her, demonstrating the preselection by women, leader of men, and protector of loved one qualities that appeal to her natural survival and replication behaviour. Furthermore, I have done the Cube, and Mystery's question game via Instant Messenger. When I use a playful neg in email or messenger I'll include a
or something so she knows I'm not knocking her and I'm being playful. When a girl responds to your ad the opening is done. Proceed through your method as usual. Your goal should be to move her from email to the phone, to in person as quickly as possible. If she sends you an email, wait a day or two before replying back. DHV spike. Don't talk to her every day. Much the same as you would with the phone game.
Any Questiosn feel free to PM me.