As we know, when lamping, if a dog gets in quick and rattles its rabbit, they (the rabbit) will quite often balk at the hedge and bounce back out into the field, its bloody frustrating when you've got fields full of game, and the dog starts dictating what he will or wont run.
But you're right its a question of confidence, the 3 quarter cross i had, that stalked on the lamp only did it on rabbits. He could'nt catch rabbits, crap at it, and not too clever behind a hare, he was very useful on bigger stuff however, and a very game dog.
imho the bull cross is just another fashion, lurchers d