Yeah, I'm wrong. One is a measurement of volume and one is a measurement of weight. So that 1 ounce = 28g and 1 fluid ounce = 2 tbsp are completely unrelated.
As for the scoop, just jam your hand in there and feel around, don't actually dig the stuff out and put it on the floor
and...the scoop is 70 cubic centimers.
1 tbsp = roughly 15cc, so you want around 4 tbsp and 2 tsp per serving.