Now it was time for the trials!

This was one of our first trials with our first sling design. The ball actually rolled backwards. The sling we used didn't cup very well.

This was our next trial. We improved our sling and also added a 15 pound weight. The uneven ground affected its preformance compared to the smooth surface on the patio, but at least it went forward this time.

This wasn't exactly our last trial, but we went back and adjusted the nail at the top which had a big impact on on the arch and distance. Plus we went with a more sturdy material for the sling to keep the distance consistent.

Both examples of some successful and not so successful trial runs.