As far as trainng a dog to do woodwork, they don't really need to go on it. They can go under, over or around the obstacle that the woodwork is meant to avoid. I had to retrain my dog to never go on any elevated woodwork after she got launched about 20 feet off a teeter by the rider she was following. Plus, when the rungs are slick, dogpaws can go right between them and snap their leg.
Also, my one caution to people is to not start their dogs on DH trails until they are about a year old, when they stop growing. It's super hard on their joints, running full-tilt down a rooty rocky uneven trail, jarring their knees/elbows/shoulders. They probably won't have any issues until they are a bit older, but do you really want your dog to be in pain when they are only 7 or 8 years old? You can use the time to really train them on flat trails, get your recalls dialled and teach them to never ever get in front of your "heel".
Dogs are awesome.
:canada: :swiss: