It’s really not too hard, especially with a breed like huskies that have it in their blood to run and pull. The biggest issue really is getting them comfortable to running with a wheel close to them and with you behind them when they feel the weight of the bike… so what I mean by that is sometimes on a leash, they pull your shoulder out but when they feel more resistance, it can take them just a little bit of time to realize they can move it and the resistance they feel isn’t gonna hurt them!