[Sachiel7]

I think we've struck a good balance with our arm. We've sacrificed being able to stack multiple tetras for speed. We don't shoot up our arm over 12 ft like many are trying, we are shooting for an arm height of 10.5 ft, which is great for our needs. We should (I'll post some video in a few days) be able to stack a tetra that is within 3ft of a goal, per se, onto the goal in (I'd estimate) 5 seconds (tops!)
This assists our strategy, which is focused a little more on the rows themselves, but still leaves the door open for quick loading of several tetras.
Our grabber this year is simple, as I posted above, we're currently just using a pole, probably with a divot cutout for the tetra to sit in (and rest on some digital sensors...)
We're probably just using some sched. 40 PVC, just like the goals. Perhaps aluminum, but I don't think there's really going to be a difference in our design.