I have been a big advocate of the flush king for years which for some of you that might not know is a clear elbow with a waste gate and a hose connect to back fill your black tank to clean it better. I recently bought the quickie flush by camco which I haven't installed yet. The quickie flush requires you to drill a hole at the top side of your black tank and insert the actual sprayer that can connect to a garden hose. The reason I bought this was because stupid me when we bought our new trailer this year, I forgot we went form a 50gal black tank on our old trailer to a 35gal on the new one and thank God on my 5th flush and not my first I overflowed the tank. I figured the quickie flush would be better so I can turn the hose on and walk away. Has anyone installed one and is it worth drilling the hole in your black tank? Thanks