This is from Good Dog Agility's 2009 February Trial. It was the first run of the morning. Mark Wirant judged.
A very popular opening ran the jump-time-jump-gamble jump-tunnel. My dog drops bars if I do something stupid. If my dog dropped bars on her own, I wouldn't even contemplate taking a gamble jump.
I went for 14 magic points. My course was 13.5. The buzzer did sound when I was across the field from the #1, but it was a straight run, so that's not a big deal for a dog that is reasonably fast. It would be a deal-breaker for a slow dog.
The key to this gamble was how to handle that #2 and the turn into the teeter, especially with a very tempting tunnel entrance. The dogs and handlers that succeeded either had good directionals (a left!), or added a front cross between the #1 and #2, which I did.