I used to go to the island, but then I won a giveaway on TBT and got 25 mil bells. Then I discovered the beauty of Turnips. Then I had way too much money to bother with making any, so I'm just sitting here with 30 mil in my account and nothing to do with it. I've paid off my houe, I don't have any PWPs to work on... :I
I use the island as well as selling those fossils from the ground and raising my prices a little more in the recycling store, ahahaha! But yeah I think mainly the island for night time beetle catching also with the bell boom it doubles the amount you make <3 If I had a bunch of btb bells I would sell them for in game bells xD
Bell boom ordinance + full basket of beetles to sell at retail, find out which fruits sell for the most in your town and plant a crapload of them for harvest...that was pretty much all I did in the beginning. I was too impatient for much else.
On my first town, almost all of my IGB came from turnips and beetles.
On my newest town, it came from selling some furniture sets and selling two/three villagers. I plan to go back to turnip and beetles for the badges, though. (-: