Well, just to present another viewpoint, not saying this is the case here, but....I've been on rides where one person is obviously holding back, jumps ahead a bit and then drops back, jumps ahead again, falls back....sort of like a racehorse bucking at the gate. It can be rather annoying not to mention distracting. A lot of unnecessary passing is imposed on everyone as well.
A friend of ours sometimes rides with us- he is a real fast rider and hates to ride slowly. As we slowly spin our way up a hill, he will zoom up the hill on his titanium bike, mashing all the way, then come back down and ride around us in a circle and zoom backup the hill again. We love our friend, but I still think that's kind of a show-off-y thing to do- making us feel like snails, especially since my DH hangs back on hills out of sweetness, for my benefit. I'd much rather our friend just go on ahead and then wait under a tree for us somewhere.
I guess it's just obvious that KSH needs to ride in the faster group next time!


18mph uphill?-
Smiling cat, she's in Dallas. I don't think we have the same definition of hills
Like, yeah! That would be a flat straightaway over here. Or maybe even a downhill...