I would substitute a peninsula for the island.
Unless you plan on building a bridge to the island, maintenance is a problem and geese nesting will be a problem. I had a small island on one pond and ended up raising the water level and made an underwater hump to eliminate island problems.
A peninsula will give you shoreline for fishing without the island problems.
Underwater humps are good structures.
Last edited by snrub; 12/09/18 09:25 PM.