When we played, I threw then climbed down to be a spotter and that worked well. You can't see very much down the hill so it is good to have a spotter. I think the vertical drop here is greater than the horizontal distance! Tomahawks work well.
Throw hard and don't worry about overshooting! There is always the risk of rolling downhill on a putt so be careful there too! This is the time when you realized that you should have brought your hiking shoes!