south otago coast

My brother inlaw has just moved up to a dairy farm in clutha valley and he cant seem to find any fish of the coast. Hes been out twice with no luck, anyone got any tips or starting points for him. He would even take a new crew member if it helped him get onto the fish.
6m alloy maclay and competent skipper.
Ive got a secret agenda by doing this as when summer rolls round I don't want to be going down there and catching nothing.

Need to find foul ground for cod. Clutha mouth up you need to go out a wee way I think, my uncles at toko mouth and he goes out 15-20km to get good fishing. South and he should hit them easy within a couple kms of the coast. Go where there's no seals. Fish on the tide etc.

Cheers josh