Drafting and taking the lead.
I've found a riding buddy that's pretty close to my abilities. So we went on a 40 miler last Sunday. During the ride we were forced onto a major two lane highway going into the wind. So we started drafting each other and picked up the pace. Neither of us had done this before so we discussed it after the ride. So I'm wondering how we should do this so that when (if) we're in a bigger group we are following a standard method. I think the next ride we should practice this.
1.) How often to switch?
2.) Are there signals to learn?
3.) What kind of drills to do?