I did the Palmer Library RR over the weekend. Something like 150 guys in the field and one lane of road to work with. The final lap I got absorbed back into the peleton, and because everyone was forced so tightly together I couldn't find enough holes to move up.
In situations like the above, where moving up otherwise is next to impossible without breaking the yellow line rule, is it acceptible in higher cat races to gently push guys out of the way to create openings? I'm not talking anything violent, just a gentle push on the hip to get a little room to move up through. Generally I'm against such shenanigans, but it seems like it may be useful in certain situations.