Well, I was going to say lucky you until I read your previous thread about the swan. Keiko's 1/2 husky, and she's reliable off leash about 80% of the time if it's in a controlled environment. She did take off on my the last time we went to the beach. I was so pissed.
Gunther started running out to some birds. I yelled at him, which caught Keiko's attention to the birds. Gunther came back, and Keiko took off. Normally, if I yell leave it, that is good enough, but not this time. Down the beach she ran, with the stupid stupid birds landing and taking off every 30 feet. Why they just didn't fly off is beyond me. I knew she would come back eventually, so me and Gunther waited, and w/i about 45 seconds she moseys on back. She knew she was in BIG trouble, and refused to come within 10 feet of me. I'm bobbing and weaving trying to grab onto her, with her just out of my reach. I finally grab her drag her over to a crevice in the rocks, give her a talking to and put her in time out. Then me and Gunther continued our walk up the beach. We didn't go too far b/c I was afraid someone would think she was abandoned.
Gunther didn't like leaving her there, he kept turning around to go back, and when we did finally turn around, he took off full speed......... ....until he realized I wasn't running with him. He was disappointed to say the least. After picking up Keiko, she stuck by my side the rest of the time we were there. She knows better than to piss me off more than once per day.
Your swan story reminded me of when we were at the pond, which is really a manmade giant fountain. Lots of people take their dogs there to swim and walk around the pond. Keiko will go wading but rarely swims. Until one time there were some ducks. They weren't out that far until she jumped in after them. Then they swam out to the middle, with Keiko following, although much farther behind. I snapped a pic of her (since she never swims) and then realized she wasn't stopping. Since she rarely swims, I was afraid she would tire out and I'd have to jump in after her, and I don't swim that well either. This time, thank goodness, telling her to leave it worked, and she reluctantly headed back to shore, with her eye on the prize the whole time.