I was wondering about fish, how well fish sold in the marketplace. I expected it to not be the best source of gold, which from what you said, sounds like that's the case.
I've found that individual gold generators aren't the best for earning gold. They sell for cheap-ish so you need to sell alot to get any decent amount of gold. But at the same time they reliably sell, which is better than items.
I've found bundles of the generators sell the best. You get a big chunk of gold, and it sells quickly.
Fishing sounds like a good plan. I thought you only fished with one account, I didn't realise you used both your main and mule. Hopefully you're able to get the AR for her.