I have tried that twice and I don't think I'll try it again. The hard part is keeping other fish out. We were sure that when we were sectioning off the area that we had scared away any other fish but later found out that it was absoulutly full of small bluegil that ate ate every single minnow fry. In 5 months of warm weather not one succsessful minnow spawn due to a ton of hungry little bluegill. I don't know how well minnows would do in cages but if you shop around you can get the material to build them relitively inexpensivly.

-Scott

Take great care of it, or let someone else have it.