Having radio-communications with your teammates up in the break is really handy too. if they're running at 27mph, all you have to do is ride at the front of the pack at 26.5mph. It'll still feel fast and they'll have no idea the break is still pulling away. Don't be too overt with anything, just sit at the front and rotate through with everyone else. Just when it's your time to pull, just go at 0.5mph slower than your teammate out front.

Crits are even easier, just start coasting into the corners about 5ft earlier than necessary. Instead of sprinting out of the corners, accelerate slowly, but fast enough that the guys behind you won't want to try and accelerate even faster in order to get around you. Another teammate behind you can coast out of the corners and open up a gap behind you. This makes the pack sprint around him in open air to get back on your wheel...