A gamble requires that your dog must be able to work away from you, and that you must be able to teach your dog to work away from you. I love to watch well trained gamble dogs - they know what directionals mean and can "go on" and "get out" and have lots of drive for the obastacles and the game.
I really don't like the whole gambling process. Choosing the opening sequence and making sure you end up in a good position for the closing sequence is very difficult and stressful for me. I like the courses that are numbered, and you just follow along, no thinking required. (Well, except for Snooker - but Snooker is fun). I have a lot of trouble rewarding my dogs away from myself, which you need to do in order to teach your dog distance. I can make excuses and say that Bernese are too "velcro" to be good gamble dogs, or that because my dogs are not very toy motivated, they cannot learn distance. But those are just excuses. Teaching distance is a lot of hard work and unless I make it a priority in my training, it ain't going to happen.
One day, I hope I can write a post about how much I love Gambling. But for now . . .