There was a guy at our range a couple years back, shooting a WB rest on a low brace height bow. His brace was so low and his rest set so far back that his 4" vanes were halfway into the bristles when he loaded them. When he drew, the resistance to those vanes going thru the bristles stopped the arrow cold. He continued drawing and pulled the nock right out of the end of the arrow. (And people wonder why they lose speed and get wrinkled vanes with the whisker bisquit.)

They've re-engineered the thing and aren't using as many bristles in the bisquit now as they did then, so it's not as bad as it was. Besides, whether you use glue on nocks or inserted nocks in bushings, you won't have any problems with the 5" vanes on aluminum arrows like that guy did. He was using a carbon without nock bushings and the nock was not a good fit in the arrow.