My (very careful) bearing left me a little low for #1 as well. Luckily I worked out where I was and corrected.
I'm not sure they should be on the map and less sure they should be used for control sites. Especially so early in the race. I'm pretty sure they weren't used for the WRE in 2014. What do you think?
If I was planning BOC 2018 I wouldn't use them. However, now that I've had two chances to check them out, I hope they are used;-)
They are not obvious features and so shouldn't be used. The map needs a lot of work before BOC 2018, particularly vegetation and rock mapping. If this gets sorted it'll be a smashing BOC.