[alaskayorkie]

* Take him outside to practice. They don't like walking on wood or linoleum in boots.
* Hold a favorite treat a few steps away and call him. If he walks to you, praise and treat.
* Do that just long enough (5 minutes?) to make sure you're holding his interest and he doesn't lose interest in the treats.
* Quit and try again the next day, making the walks a little longer.
* Keep a close eye on the boots and make sure they're not swivelling around on his ankles and making the walk uncomfortable.

Good luck, and post pics!