How long a wait are you having?Load the line up and spray the soap under high pressure and then the waiting period can be the dwell time and you are ready to rinse.Then it shouldnt take 15 seconds to load the load the line back up and you are ready again.A really good 1 step soap is what you need.I see Blaines sold some of his 2 step hoses to some of these guys on the boards.The trucks i have seen them clean i could run a circles around them with my soap.Not trying to get anybody wound up but facts are facts.