Originally Posted by
DGlenday
I've also been in lines where the leader pulls off after 30 seconds or less, before the previous puller has even joined the back of the line. That seems utterly pointless to me.
This isn't pointless. Having a chain gang going through and off, with everyone taking only a very short pull, can maintain a very high speed.
Otherwise, there's no rule. If I'm clearly the strongest rider (rare) I'll pull longest. If there are inexperienced riders in the group who have trouble holding a steady pace, or surge off the front, I'll sometimes sit at the front to restore a bit of order. In general, it fairly quickly becomes clear who is strong/competent and people will pull for the length of time that seems most constructive in that context.