Zap is consistently single stepping through the weaves! Wow that dog really knows how to challenge me :o)
I must admit I don't really know exactly how I managed to get the result I wanted?! I guess a combination of securing the poles with pegs and rewarding with apples did the trick. Yes apples - the ultimate reward next regular garden weed - don't ask me why. Let's just say that Zap is kind of special in a weird way.
For some reason thrown apples is the best reward ever - they are super fun to chase, herd and nipple at. He doesn't eat them.
I guess you don't always have to understand why it works, but simply accept and appreciate that it does :o)