of pressure on the rein to get the horse to "come back to you" is just terrible. take the halter off the lead rope now and throw the rope back out, snap end first.
do the same thing, drag the snap back to you. how does that feel? it feels pretty light, right? you feel a big difference. but that's still terrible. now take the lead rope back in hand and throw the opposite end out, the end without the snap. that feels really light. it feels like nothing. it's still terrible.
the reason it's terrible is because when the horse really gives to you, there is no pull, zero. and it's 