I used to lamp a pure collie back in the ,s.
When I first started her she wouldnt run down the beam but come in from the side. She used to catch quite a few, perhaps 4 out of every 10 runs, but if you chose the rabbits you ran her on, her averages would go up to perhaps 6 or 7 out of 10.
It took her a long time to learn to pick rabbits up, she used to hold them with her front feet until I got there to take them from her. She did the same when ferretting.
Also lamped a colliexhuntaway about 10 years ago. She never worked cattle or sheep, just lived for hunting. Took numerous foxes with her,