Yeah, that's something that's been on my mind for a while. It's trying to balance money properly. It's damn hard. As far I know, most people use the Casino. You buy chips and then save. You play, if you win, save again, if you lose, you just reload. You can get a ton of money easily this way, but it can be tedious. I'll try think of something else to add. Maybe something like pokemon has, monster drops that just sell for large amounts of gold.
Yup, I didn't like the capture net either. The next update has it dropped to 2000 gold and durability is 15 to begin with. So you get more bang for your back.