Peter Blatch
By all means use a ‘corkscrew’ if you must but I prefer to teach a dog to sit quietly at the peg, and only retrieve when commanded to do so.

Steadiness is something that is imparted during training but it can be reinforced during the drive by sitting the dog two or three yards in front thereby allowing you to keep your eye on the dog, and enough time to correct it should it try to run in.

Another aid is a thumb-hole stick which you push firmly into the ground attached to a lead that’s then draped over the dog’s head.

Dog handlers that do a lot of picking up with their dogs can soon undo the steadiness that’s needed at a peg so to prevent this happening avoid all temptation by popping the lead on a young dog and only let it go for the retrieves you choose.