What's the best way to clean up leaves in your pond?

With too many leaves it becomes discolored and red from the breakdown of all the organic matter. I've found the best way to handle this is to drain the pond and give it one good cleaning. Afterwards I installed small pylons on each side of the pond and arched pvc over the pond that had a net attached that I can quickly place before the leaves fall. Does anyone have any other ideas or perhaps products that work well with breaking down organic compounds.