1. Get a pinata that is cheap to romance but worth $, for example a Chewnicorn.

2. After you romance them once start getting romance candy form Costalot's.

3. Become a master romancer for that pinata. Note make sure that your garden is empty other than your chosen pinata and their home.

4. After you have become a master romancer romance them about 10 more times then sell them all even the house.

Continue this process with any pinata. After you get tired try to tame some sours. This will always work if you stick to it you can be the most wealthy gardener on Pinata Island. Good Fortune!