CONCRETE deck cleaning

[skizilla]

Every spring I spend 3 to 4 hours of backbreaking powerwashing my white concrete limestone
deck around my inground pool. I was wondering if anybody had a better and faster way of cleaning the concrete,
maybe a cleaner and a push broom. Some of the "winter stains" from leaves and stuff won't come out very easy. Any ideas are greatly appreciated!
PS... I won't get anything I use on the deck in the pool.

[Knightf6]

CONCRETE BOND & CLEAN TM is a unique product that safely cleans and renews old concrete with minimal scrubbing.

When finished, make your deck NON SLIP both WET and DRY using SKID SAFE Water Based Sealer/Finish and ND AGGREGATE TM. All products manufactured by NEW DIMENSIONS SOLUTIONS since 1986.

Products are pleasant and easy and safe to use as directed.

[raideron]

Whenever I net or brush pool I splash some pool water on concrete, doesn't seem to hurt or stain concrete obviously, and makes cleaning the concrete much easier. Very effective on bird droppings.