Welcome oilman!
You could quickly and easily bull doze some sand from one or 2 edges of the pond and build up shallow spawning areas. It's probably only 4 hours work with a good size dozer, because sand falls off a cliff very easily.
If your pond communicates directly with the water table, be careful what chemicals or fertilizer you put in it. It could contaminate your neighbor's water wells, if there are any shallow ones near by.
