Originally Posted by rznhales
Power washer or I've heard of some who squirt a little dawn dish soap in the bilge to mix with the water while boating and then rinse down good afterwards.
I do this, but more like 1/3 bottle of dish soap. I pull the drain plug while still on the ramp to fill the bilge with several gallons of water. The drive home with the water/soap mixture cleans it out.