I have a friend that has a nice pond on his property. The bass in his
pond also seemed to be on the small side for the time they had been
there. He was advised that the pond seemed to be in pretty good shape as
far as an eco-system went...plenty of food for the bass. He was advised
that maybe there was not enough natural cover, and structure for a
healthy bass habitat. He contracted to have some "rip-rap" hauled in,
and created some rock piles. He also had a friend bring his drag line
crane over, and created a deep end "hole" at the runoff entry to the
pond. He already had one small pier, but he added on to it with a large
"T" at the end. Now he has more structure, more shaded area...a better
bass habitat. He also removes some smaller bass, and puts them in
another pond that a neighbor recently built on his property..plus eats a
few too

. All this has helped the growth of the bass considerably.
A lot of ponds are just not great bass habitats!
JK