Prongs are not allowed in Scotland, correct or not?
If you are training to walk, I would use a collar, clicker and treats. Teach them position. OR a harness specifically for training. But the more info I see come out about harnesses, the less I'm inclined to like them.
Seger vom Sitz von der Hose
Forever loved and missed.....Banshee
~The strength of one's opinion should not exceed their knowledge on the matter~