Some dogs just never "get" fetch - others are born to fetch! Scamp is a Sheltie - he'd like herding games more, if you could think of any! I'd try teaching him his toy's names - like "rope" and then getting him to bring it to you, "Bring me Rope, Scamp!" without you having thrown it first. When he does happen to bring it to you, praise lavishly! See how that goes, then maybe fetch will be the next step!