OK, I need to get started on my pond real soon so I stop inventing new things to add to it. On my way to the property on Friday I had a brain strom (ok more like a cramp) to add a small island to the pond (Plan is to start building in late July/Aug). The island will only be 10 to 15 feet in diameter. I have a couple of basic questions. Is this a good idea? I know the local geese will find it quickly and use it as a rest/nesting area I am OK with that. I would like to plant a single tree on it, would this be OK, any issues, suggestion of specie? ANy other items I should be concerned with?