I'd agree with that mate.
I took my pup ferreting/mooching a few times, and the first time I took him out on the lamp and showed him a rabbit in the beam, he ran off in the opposite direction with his fecking nose to the ground!
Unorthodox maybe, but I picked him up for the second one, and made sure it was his eyes he was using. It worked, because he caught it!
cheers