Then for practicing alone, I set him in a "Wait" at the entrance to the weaves and called him through. It didn't take long for him to pick the idea up. Finally I added a jump at each end, with the idea that they help line him up for the channel weaves and also give him a target straight ahead afterwards.
This video shows how he can now run a small loop of jumps with channel weaves included:
I suspect this is his smug "I'm a clever boy!" face. LOL