I used to ride at GT and Inners, there’re plenty spots on the long climbs to pass someone, so it’s never been an issue there. On the DHs, if I get to the top and see a group getting ready to set off AND I want to stop, it’s fairly easy to judge how quick they’ll be through a section and set off accordingly. If I do meet another slower group, I normally stop entirely, hopefully before they’ve realised I’m there. I don’t then ‘waste’ a section by riding it slowly, they don’t get hassled/pressured by freewheels clicking away. This sometimes backfires, by them stopping 20 yards up the trail – meaning I’ve got to restart and get back up to speed with no rest – but it’s all good.
One thing that I do, and let others do, but seems to annoy a small minority of others – if I’m riding up to the summit (say, top of Spooky Wood) and I’m not stopping, I’ll ride through the folks hanging around beside the trail and keep going. Not people on bikes waiting to ‘drop in’ but the ones bimbling around getting ready to leave.
Opinions?