X2 on the 'short term solution' - if you have any sediment runoff or leaves/etc that are going to settle in the pond then the rock would be covered up in short order. I wouldn't waste the time and money doing the whole thing.

However I have several spots throughout my small pond where I've dumped riprap...it's big enough that it doesn't get covered quickly and it provides all sorts of nooks and crannies for crayfish and similar invertebrates to hide - and for the fish to hunt them.

Dale

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"When tempted to fight fire with fire, remember that the Fire Department usually uses water." - anonymous