To haul in is to pull a net or a line aboard. Haul in the nets, haul in the slack, haul in hand over hand.
It is heavy work and the word carries that weight, unlike pull. Figuratively it is used of money and of arrests, so a business can haul in a fortune.
1phrasehaul inTo pull a net or a line aboard.
“They began to haul in the nets before it was light.”
haul in is a phrase.
Practised in Sea & Sailing