(A) handballs on-the-full to (B)
(B) takes, runs hard, then handballs to the feet of (C) who is calling loud and leading towards (D)
(C) picks up the half-volley and hearing a call from (D), handballs on-the-up to them
This simulates a situation where (C) has picked-up a poor handball and is hot, so they must handball as soon as possible after gathering
(C) must launch their body at (D) when handballing
(D) takes, runs hard, then handballs to the feet of (A) who is calling loud and leading towards (B)
(A) picks up the half-volley and hearing a call from (B), handballs on-the-up to them
After a minute or so, introduce a second ball.
