Our club group ride route has a couple mile-long narrower sections with more cars and worse sightlines.

We're a bit uncertain of the best way to handle it.

Singlefile or two-up.

Actually, I'm more concerned about our B Group. When they go singlefile they tend to get gaps between them.

These are groups of 10-20 riders.

We're gonna fix this but I'm wondering if we should just work on closing all the gaps in singlefile or if we should just aim for 2-up instead.

I kinda like taking the lane and having riders with blinkies at the back who use hand signals to tell cars when it's good to pass.

We don't want to balk cars needlessly. When we stretch out singlefile we do delay them too much. I'm thinking a compact group then wave-around is the way to go. These roads are open enough and not so very heavily used so that if we were compact I think they could get around quick.

(PS: I see this is a training question, not racing. But this subject doesn't seem suitable for the Road section -- about bikes -- or the training section -- about plans. So I'll try the Roadies!)