Tripping and withholding the ball from play

[barney19]

Question 1: Does tripping have to be deliberate? What if two players get tangled up and both go down?

Question 2: This seems to be particular to middle schoolers: loose balls, 6 middies scrumming for the ball. Someone steps on the balls inadvertantly. Is this called? Does witholding the ball from play have to be deliberate? Also, what constitutes exactly withholding the ball from play?

Question 3: This goes back to the previous post because Federation rule 6.13 says a player shall not, "trap it with his crosse longer than is necessary for him to control the ball and pick it up with one continuous motion." A goalie clamping the ball and dragging it back to the safety of the crease isn't one continuous motion is it?

Thoughts?