I am the sole heir to a beautiful piece of property just south of Toronto Lake with two huge, spring-fed ponds.  They have always been great bass fisheries, but now the ponds are overpopulated with bass which has caused the fish to become stunted.  You can catch a bass almost every cast, but they're all 10-14 inches in length.  I would like some educated response if possible, not just a guess.  Should I start thinning the schools out, or should I introduce a predatory species like pike or stripers?  I'd really like to turn this into a future trophy bass spot.  I also have a parasite that affects the whole population.  It's a larvae of some kind that infests the fins and even the body of these fish.  I've been told that they don't hurt the fish and you can still safely eat them, but I'd like it gone if at all possible.   

For information on pond management, there is no better resource than pondboss.com Pick up the book "Basic Pond Management" by Bob Lusk (aka "The Pond Boss") and give a a thorough read through. The forums over on pondboss.com are a great place to get specific questions answered.