Defence lawyer Doug Taffs said Douglas was a whitebaiter and every season he went off the benefit and declared his whitebait earnings.
The season had been particularly good before his arrest so he had been able to buy himself a larger amount of cannabis than usual.
As the house bus he lived in had no fridge, he would go to his friend's house to clean, weigh and bag the whitebait, which explained the boxes of snap-lock bags, Mr Taffs said.