most folk iv watched only ever teach a lurcher to jump from a standstill, and as a result one of most common things im asked for advice for is jumpin, my kids teach my mutts to jump now, 1st thet start wirh jumps from a stand still, then they move onto jumpin whilst trotting. they do that by getting dog used to jumping small ditches rather than over things, more a long jump than a high jump, then it gets put together until young dogs are jumpin over things whilst running, then just increase the height an speed, most stuff my mutts catch over a jump is usually within a yard or 2 of other side