We have slip leads for the Poodles and I've been known to use them with the Tzu occasionally. Sheila, for camping I would go with a kindness martingale lead - if the dog tries to take-off, the martingale tightens but exerts equal pressure all around the neck rather than just on the trachea (like a slip lead). Most show leads come in 4' or 6' lengths, and I personally would never use a lead longer than 6' (and NEVER those damn dangerous flexis). If your dog is more than 6' away from you, you cannot react quickly-enough if there is danger.